Mitutoyo QM-Height QMH-350AX User manual

User's Manual
- Instructions for use -
Read this document thoroughly before operating the product.
After reading, retain it close at hand for future reference.
This English language version of the document contains
the original instructions.
High-Precision Digital
Height Gauge
QM-Height
QMH-350AX
QMH-350BX
QMH-600AX
QMH-600BX
QMH-14"AX
QMH-14"BX
QMH-24"AX
QMH-24"BX
*99MAF600B1*
No. 99MAF600B1
Date of publication: April 1, 2020 (1)

No. 99MAF600B
■Product names and model numbers covered in this document
Product name Model number
High-Precision Digital Height Gauge QM-Height QMH-350AX
QMH-350BX
QMH-600AX
QMH-600BX
QMH-14"AX
QMH-14"BX
QMH-24"AX
QMH-24"BX
■Notice regarding this document
yMitutoyo Corporation assumes no responsibilities for any damage to the product, caused by its use
not conforming to the procedure described in this document.
yUpon loan or transfer of this product, be sure to attach this document to the product.
yIntheeventoflossordamagetothisdocument,immediatelycontactaMitutoyosaleso󰀩ceor
your dealer.
yRead this document thoroughly before operating the product. In particular, be sure to fully under-
stand "Safety Precautions" and "Precautions for Use" in the preface.
yThe contents of this document are based on information current as of April, 2020.
yNo part or whole of this document may be transmitted or reproduced by any means without prior
written permission of Mitutoyo Corporation.
ySomescreendisplaysinthisdocumentmaybehighlighted,simpliedorpartiallyomittedforcon-
venienceofexplanation.Inaddition,someofthemmaydi󰀨erfromactualonestotheextentthatno
user will misunderstand the functions and operations.
yThe corporation, organization and product names that appear in this document are their trade-
marks or registered trademarks.
©2018-2020 Mitutoyo Corporation. All rights reserved.

iNo. 99MAF600B
Conventions and Wording Used in This Document
■Safety reminder conventions and wording warning against potential hazards
WARNING
Indicates a hazard with a medium level of risk which, if not avoided, could
result in death or serious injury.
CAUTION
Indicates a hazard with a low level of risk which, if not avoided, could re-
sult in minor or moderate injury.
NOTICE
Indicates a potentially hazardous situation which, if not avoided, may result
in property damage.
■Conventions indicating prohibited and mandatory actions
Indicates concrete information about prohibited actions.
Indicates concrete information about mandatory actions.
■Conventions and wording indicating referential information or reference
location
Tips
Indicates further information and details relevant for the operating methods and procedures that are
explained in that section.
Indicates reference location if there is information that should be referred to in this document or an
extraneous User's Manual.
E.g.: For details about XX, see "1.2 Names and Functions of Each Part" on page 2.

ii
No. 99MAF600B
Safety Precautions
Read these "Safety Precautions" thoroughly before operating the product to use it properly.
These safety precautions include such information as to prevent injury to the operator and other per-
sons, damage to property and product defects. Be sure to observe these precautions carefully.
WARNING
• Donotdisassembleormodifythisproduct.Doingsocanresultinreorelectricshock.
• Donotplacecontainerswithwater,suchasowerpots,nearthisproduct.Ifwatergetsintothe
device,areorelectricshockmayoccur.Ifwaterdoesgetintothedevice,turno󰀨thepower,
andcontactus.Continuingtousethedevicemayresultinareorelectricshock.
• Do not use the device in areas where volatile gases may be released. Doing so can result in a
re.
CAUTION
• This product is heavy. Do not allow it to be lifted or moved by only one person.
• Do not place the product on an unstable surface. It may fall or topple over, causing an injury.
• Do not charge or disassemble the accompanying batteries. They may short circuit.
• This product is heavy. Wear safety shoes. Slippers must not be worn when transporting or in-
stalling the product.
• Wheninstallingtheproductonasurfaceplate,becarefulnottopinchyourngerswiththebase.
• The product may cause injury if it falls down or over. Handle with care.
NOTICE
Do not apply an external voltage to the product with a device such as an electric engraver. Doing so
may lead to damage or malfunction.
• If the device will not be used for an extended period of time, remove the batteries. Battery leak-
age can damage the device.
• Only use LR6 (AA alkaline) or Ni-MH (nickel metal hydride) batteries.
Handle the batteries according to their instructions.

iii No. 99MAF600B
Precautions for Use
■Use and handling of the product
●This product is a measuring instrument.
Do not use this product for any purposes other than measuring.
●This product is for industrial usage.
Do not use this product for purposes other than for industrial usage.
●The product is a precision instrument.
Handle this product with care. Do not apply excessive shock or force to any of the parts during opera-
tion.
■Environment for placement
Use the product in the following places.
yWhere there is minimal dust and grit
yWhere there are minimal vibrations
yWhere the ambient temperature is from 0 °C through 40 °C (from 10 °C through 40 °C when the
battery is used)
(For precision measurements, the temperature should be consistently around 20 °C.)
yAn operating environment with humidity from 20 %RH through 80 %RH
yOn a surface plate
Avoid using the product in the following places.
yWhere directly exposed to cutting oil, water, etc.
yWhere exposed to direct sunlight, hot air or cold air
yWhere instruments generating electromagnetic noise, such as a welding machine or electric dis-
charge machine, are used.
■Maintenance
yDo not use detergents or organic solvents such as thinners or benzine.
For details about cleaning method, see "5 Maintenance" on page 61.
yIn order to prevent dirt and dust accumulation on the main unit, we recommend covering it with the
supplied product cover after use.

iv
No. 99MAF600B
■Power supply
yAfteruse,pleasebesuretoturno󰀨thepower.
yDo not connect the AC adapter (optional accessory) to a high-current power supply used by ma-
chine tools or large CNC measuring instrument.
yWhen the power supply to the product is terminated by removing the battery or unplugging the AC
adapter (optional accessory), the following data will be erased.
yReference (INC measurement system)
"■Settingthereference(INCmeasurementsystem)"onpage16
yReferencevaluessetformeasuringthedi󰀨erencebetweentwopoints
"3.1.2CalculatingtheDi󰀨erencebetweentheCurrentMeasurementValueandaSetRefer-
ence" on page 35
yMeasurement values stored in the memory
"3.1.3CalculatingtheDi󰀨erencebetweenTwoMeasurementValuesStoredinMemory"on
page 37
Electromagnetic Compatibility (EMC)
This product complies with the EU EMC Directive. Note that in environments where electromagnetic
interferenceexceedsEMCrequirementsdenedinthisdirective,appropriatecountermeasuresare
required to assure the product performance.
This product is an industrial product, and is not intended to be used in residential environment. If this
product is used in residential environment, this product may cause electromagnetic interference with
other instruments. In such a case, it is required to take appropriate measures for preventing such elec-
tromagnetic interference.
Export Control Compliance
This product falls into the Catch-All-Controlled Goods and/or Catch-All-Controlled Technologies (includ-
ing Programs) under Category 16 of Appended Table 1 of Export Trade Control Order or under Catego-
ry 16 of Appended Table of Foreign Exchange Control Order, based on Foreign Exchange and Foreign
Trade Act of Japan.
If you intend re-export of the product from a country other than Japan, re-sale of the product in a coun-
try other than Japan, or re-providing of the technology (including Programs), you shall observe the
regulations of your country.
Also,ifanoptionisaddedormodiedtoaddafunctiontothisproduct,thisproductmayfallunderthe
category of List-Control Goods, List-Control Technology (including Programs) under Category 1 - 15
of Appended Table 1 of Export Trade Control Order or under Category 1 - 15 of Appended Table of
Foreign Exchange Control Order, based on Foreign Exchange and Foreign Trade Act of Japan. In that
case, if you intend re-export of the product from a country other than Japan, re-sale of the product in a
country other than Japan, or re-providing of the technology (including Programs), you shall observe the
regulations of your country. Please contact Mitutoyo in advance.
Notes on Export to EU Member Countries
When you intend exporting of this product to any of the EU member countries, it may be required to
provide User's Manual(s) in English and EU Declaration of Conformity in English (under certain circum-
stances,User'sManual(s)inthedestinationcountry'so󰀩ciallanguageandEUDeclarationofConfor-
mityinthedestinationcountry'so󰀩ciallanguage).Fordetailedinformation,pleasecontactMitutoyoin
advance.

vNo. 99MAF600B
Disposal of Products outside the European Union and
Other European Countries
Pleasefollowtheo󰀩cialinstructionineachcommunityandcountry.
Disposal of Old Electrical & Electronic Equipment
(Applicable in the European Union and Other European
Countries with Separate Collection Systems)
This symbol on the product or on its packaging is based on WEEE Directive (Directive on Waste
Electrical and Electronic Equipment), which is a regulation in EU member countries, and this
symbol indicates that this product shall not be treated as household waste.
Toreducetheenvironmentalimpactandminimizethevolumeoflandlls,pleasecooperatein
reuse and recycle.
For how to dispose of the product, please contact your dealer or the nearest Mitutoyo sales
o󰀩ce.
Disposal of Waste Batteries and Accumulators
(Applicable in the European Union and Other European
Countries with Separate Collection Systems)
EU
Hg
Batteries and accumulators containing heavy metals such as mercury, lead, and cadmium
may contaminate the environment if improperly discarded. When incinerated, certain chemi-
cals are released into the air or concentrated in the ash residue from the combustion process;
this may lead to a health risk to humans, animals and the environment in general.
In compliance with legal requirements, the symbol of a 'crossed-out wheeled bin' is either ap-
plied on the battery or on its packaging. This symbol indicates that disposal of the batteries in
household waste is strictly prohibited; instead the batteries have to be disposed of by separate
collectionandrecyclingmeans.Additionalmarkingidentiestheheavymetalcontent(i.e.Cd
=cadmium, Hg = mercury, Pb = lead) as contained within the battery if over prescribed levels.
End users are obliged by law to comply with the discarding procedure for waste batteries. At
Mitutoyo facilities, or at its appointed distributors, receptacles will be provided to accept, at no
charge, the disposal of previously supplied batteries.

vi
No. 99MAF600B
China RoHS Compliance Information
This product meets China RoHS requirements. See the table below.
产品中有害物质的名称及含量
部件名称
有害物质
铅汞镉六价铬 多溴联苯 多溴二苯醚
(Pb) (Hg) (Cd) (C r( VI)) (PBB) (PBDE)
本体 ×○○○○○
配件 ○○○○○○
本表格依据 SJ/T 11364 的规定编制。
○：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
×：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
环保使用期限标识是根据《电器电子产品有害物质限制使用管理办法》以及《电子电气产品有害
物质限制使用标识要求(SJ/T11364-2014)》制定的,适用于中国境内销售的电子电气产品的标识。
电器电子产品只要按照安全及使用说明内容在正常使用情况下,从生产日期算起,在此期限内产品
中含有的有毒有害物质不致发生外泄或突变,不致对环境造成严重污染或对其人身、财产造成严
重损害。
产品使用后,要废弃在环保使用年限内或者刚到年限的产品,请根据国家标准采取适当的方法进
行处置。
另外,此期限不同于质量/功能的保证期限。

vii No. 99MAF600B
Warranty
This product has been manufactured under strict quality management, but should it develop problems
within one year of the date of purchase in normal use, repair shall be performed free of charge. Please
contact the agent where you purchased the product or Mitutoyo sales representative ( "SERVICE
NETWORK" on page App-1).
If this product fails or is damaged for any of the following reasons, it will be subject to a repair charge,
even if it is still under warranty.
yFailure or damage owing to fair wear and tear
yFailure or damage owing to inappropriate handling, maintenance or repair, or to unauthorized mod-
ication
yFailure or damage owing to transport, dropping, or relocation of the product after purchase
yFailureordamageowingtore,salt,gas,abnormalvoltage,lightningsurge,ornaturaldisaster
yFailure or damage owing to use in combination with hardware or software other than those desig-
nated or permitted by Mitutoyo
yFailure or damage owing to use in ultra-hazardous activities
Thiswarrantyise󰀨ectiveonlywheretheproductisproperlyinstalledandoperatedinconformancewith
the instructions in this document within the original country of the installation.
EXCEPT AS SPECIFIED IN THIS WARRANTY, ALL EXPRESS OR IMPLIED CONDITIONS, REP-
RESENTATIONS,ANDWARRANTIESOFANYNATUREWHATSOEVERINCLUDING,WITHOUT
LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE, NONINFRINGEMENT OR WARRANTY ARISING FROM A COURSE OF DEALING, US-
AGE, OR TRADE PRACTICE, ARE HEREBY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY
APPLICABLE LAW.
You assume responsibility for all results due to the selection of this product to achieve your intended
results.
Disclaimer
INNOEVENTWILLMITUTOYO,ITSAFFILIATEDANDRELATEDCOMPANIESANDSUPPLIERS
BELIABLEFORANYLOSTREVENUE,PROFIT,ORDATA,ORFORSPECIAL,DIRECT,INDIRECT,
CONSEQUENTIAL,INCIDENTAL,ORPUNITIVEDAMAGESHOWEVERCAUSEDANDREGARD-
LESS OF THE THEORY OF LIABILITY ARISING OUT OF THE USE OF OR INABILITY TO USE THIS
PRODUCTEVENIFMITUTOYOORITSAFFILIATEDANDRELATEDCOMPANIESAND/ORSUPPLI-
ERSHAVEBEENADVISEDOFTHEPOSSIBILITYOFSUCHDAMAGES.
If, notwithstanding the foregoing, Mitutoyo is found to be liable to you for any damage or loss which
arises out of or is in any way connected with use of this product by you, in no event shall Mitutoyo's and/
oritsa󰀩liatedandrelatedcompanies'andsuppliers'liabilitytoyou,whetherincontract,tort(including
negligence), or otherwise, exceed the price paid by you for the product only.
The foregoing limitations shall apply even if the above-stated warranty fails of its essential purpose.
BECAUSE SOME COUNTRIES, STATES OR JURISDICTIONS DO NOT ALLOW THE EXCLUSION
OR THE LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, IN SUCH
COUNTRIES, STATES OR JURISDICTIONS, MITUTOYO'S LIABILITY SHALL BE LIMITED TO THE
EXTENT PERMITTED BY LAW.

viii
No. 99MAF600B
About This Document
■Positioning of this document, document map
This describes the positioning of this document and its relationship with other installments.
User's Manual (This document)
Describes the QM-Height precautions for use, oper-
ationprocedures,thespecications,maintenance,
troubleshooting, etc.
Setup Manual
Describes unpacking and installation.
Quick Reference Manual
Quick reference for basic operations
■Intended readers and purpose of this document
●Intended readers
This document is intended for beginners of the High-Precision Digital Height Gauge.
The readers are assumed to have been familiar with basic operations on a PC and Windows.
They are also assumed to be able to understand individual instructions by reading the described draw-
ings.
●Purpose
This document is aimed at understanding how to use the High-Precision Digital Height Gauge to per-
formbasicmeasurementsandspecicusage,applications.

ix No. 99MAF600B
■How to read this document
An operation video can be viewed.
24
2 Basic Measuring Methods
No. 99MAF60 0B
2.4 Measuring the Inside Diameter
Measure the diameter (inside diameter) of a hole. By scanning the upper and lower surfaces of a hole
with the stylus, the peak points can be detected. The diameter is calculated from the The
diameter of a semicircle where part of the top or bottom of the hole is missing cannot be obtained.
This section explains the measurement procedure using the surface plate as the origin (ABS measure-
ment system).
Origin
(ABS measurement system)
Highest
point
Lowest
point
1 Check the setting for the termination method of the scanning measurement (automatic termi-
nation or manual termination).
For details about the setup method, see "3.3 Setting the Termination Method of Scanning Measure-
ments" on page 44.
Tips
The operation in step 4 for "automatic termination" and "manual termination".
2 Set the surface plate as the origin (ABS measurement system).
For details about the setup, see "2.1.1 Setting the Origin and the Reference" on page 12.
3 Press [Inside diameter measurement].
M1 M2
» An icon will be displayed in the upper left of the LCD.
4 Detect the lowest point of the hole.
• If [Auto] (automatic termination) is set, ensure that the stylus is positioned to pass through the
lowest point of the hole. When the stylus is raised about 0.5 mm from the lowest point of the hole,
a beep sound will be made, and the peak-point detection will automatically terminate.
• Bring the stylus into contact within 0.5 mm of the lowest point. Measuring with a wider range may
increase measurement errors.
1 Turn the probe unit up/down wheel, and slow-
ly bring the stylus into contact near the center
of the bottom surface of the hole until there
is a "beep" sound (keep the stylus in contact
with the surface).
» [0.000] will be displayed on
the LCD.
A video about inside diam-
eter measurements can be
viewed.
Indicates the order and the contents
of tasks.
The sentence with ">>" mark at the head
indicates the operation result.
Indicates supplementary information.
■Brackets, quotation marks and numbers ( 1 , 1)
The meanings of brackets, quotation marks and numbers to be used in this document are as follows.
( ): Round brackets Represent a paraphrase of an immediately preceding phrase or a
supplementary explanation.
" ": Double quotation marks Represent a highlighted phrase. They also indicate an index where
information to be referenced is described.
[ ]: Square brackets Represent a menu name on the screen, screen name, dialog
name, button, display item, tab name, or key on the keyboard. They
also indicate an item to be purposely entered or selected by the
customer.
1 , 2 , 3 ... Indicates the order and the contents of tasks.
1, 2, 3... (
1 : indicates main tasks, 1: indicates detailed tasks)

x
No. 99MAF600B
Contents
Conventions and Wording Used in This Document …………………………………… i
Safety Precautions …………………………………………………………………………… ii
Precautions for Use…………………………………………………………………………… iii
Electromagnetic Compatibility (EMC) …………………………………………………… iv
Export Control Compliance ………………………………………………………………… iv
Notes on Export to EU Member Countries ……………………………………………… iv
Disposal of Products outside the European Union and Other European Countries … v
Disposal of Old Electrical & Electronic Equipment (Applicable in the European
Union and Other European Countries with Separate Collection Systems) ………… v
Disposal of Waste Batteries and Accumulators (Applicable in the European Union
and Other European Countries with Separate Collection Systems) ………………… v
China RoHS Compliance Information……………………………………………………… vi
Warranty …………………………………………………………………………………………vii
Disclaimer ………………………………………………………………………………………vii
About This Document ……………………………………………………………………… viii
Contents ………………………………………………………………………………………… x
1 Before Using This Product……………………………………………………………… 1
1.1 Product Capabilities ………………………………………………………………… 1
1.2 Names and Functions of Each Part ……………………………………………… 2
1.2.1 Main Unit …………………………………………………………………………………… 2
1.2.2 Display Unit ………………………………………………………………………………… 4
1.3 Basic Operations …………………………………………………………………… 7
1.3.1 TurningthePowerOnandO󰀨 …………………………………………………………… 7
1.3.2 Moving the Main Unit ……………………………………………………………………… 8
1.3.3 Moving the Probe Unit ………………………………………………………………………10
2 Basic Measuring Methods ……………………………………………………………… 11
2.1 Preparing Measurements …………………………………………………………12
2.1.1 Setting the Origin and the Reference …………………………………………………… 12
2.1.2 Setting the Diameter of the Ball on the Tip of the Stylus ………………………………18
2.2 Measuring the Height ………………………………………………………………21
2.3 Measuring Steps and Width ………………………………………………………22

xi No. 99MAF600B
2.4 Measuring the Inside Diameter ……………………………………………………24
2.5 Measuring the Outside Diameter …………………………………………………27
2.6 Measuring the Plane Displacement (Plane Scanning Measurement) …………30
3 SpecicUsageApplications ……………………………………………………………33
3.1 CalculatingtheDi󰀨erencebetweenTwoMeasurementValues…………………33
3.1.1 CalculatingtheDi󰀨erencebetweentheCurrentandPreviousMeasurementValues …34
3.1.2
CalculatingtheDi󰀨erencebetweentheCurrentMeasurementValueandaSetReference …35
3.1.3 CalculatingtheDi󰀨erencebetweenTwoMeasurementValuesStoredinMemory …37
3.2 Judging the Tolerance ………………………………………………………………40
3.2.1 Setting the Upper and Lower Tolerance Limits ………………………………………… 41
3.2.2 Enabling/Disabling the Judgment Function ………………………………………………43
3.3 Setting the Termination Method of Scanning Measurements …………………44
3.4 Registering the Order of Measurements …………………………………………45
3.4.1 Measuring Using the Registered Measurement Steps …………………………………46
3.5 SettingtheResolutionforMeasurementValues …………………………………48
3.6 SettingtheTimeuntilthePowerTurnsO󰀨(Auto-O󰀨) …………………………49
3.7 Setting the LED Lighting Time ……………………………………………………50
3.8 Outputting Measurement Results to an External Device ………………………52
3.8.1 SelectingtheDisplayedValuetoBeOutput………………………………………………52
3.8.2 Outputting Data to a Mini Printer (Optional Accessory) …………………………………53
3.8.3 Outputting Data to a PC (Windows Only) …………………………………………………55
4 Troubleshooting …………………………………………………………………………57
4.1 If the Following Problem Occurs …………………………………………………57
4.2 If Error Messages Are Displayed …………………………………………………59
5 Maintenance ………………………………………………………………………………61
6 Specications ……………………………………………………………………………63
6.1 BasicSpecications …………………………………………………………………63
6.2 DataOutputSpecications …………………………………………………………65
6.2.1 Digimatic Data Output ………………………………………………………………………65
6.2.2 USBDataOutputSpecications …………………………………………………………67
6.3 Accessories …………………………………………………………………………68
6.4 Optional Accessories ………………………………………………………………69
Index …………………………………………………………………………………… Index-1
SERVICE NETWORK …………………………………………………………………… App-1

xii
No. 99MAF600B

1No. 99MAF600B
1 Before Using This Product
1
1 Before Using This Product
This chapter explains the product's characteristics, names and functions of each part of the main unit,
basicoperations,andthesettingsthatmustbeconguredpriortomeasurement.
1.1 Product Capabilities
This product automatically measures the height of the position. Bring the stylus attached to the detec-
tion unit (probe unit) into contact with the workpiece from above or below, and press it against the work-
piece until a beep sound is made.
Besides measuring height, the probe unit itself is constructed for free vertical movement within a set
range, which enables vertical width measurements, the measurement of the inside diameter of a hole
ortheoutsidediameterofacylinderandthemeasurementoftherun-outofaatsurface(maximum,
minimum, displacement) through scanning measurements.
Width measurement Inside diameter mea-
surement of a hole
Outside diameter mea-
surement of a cylinder
Run-out measurement
ofaatsurface

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1 Before Using This Product
No. 99MAF600B
1.2 Names and Functions of Each Part
1.2.1 Main Unit
B
A
③
B
A
①
②
⑧
⑨
⑩
⑪
⑬
⑭
⑮
⑦
⑫
⑤
④
⑯
⑲
⑱
⑥
⑰
Number Name Functions
①Head cover -
②Display unit Displays the counted values, measurement values (results),
and any messages.

3
1 Before Using This Product
No. 99MAF600B
Number Name Functions
③Probe unit Unit that detects the position of the measuring surface. The
ball on the tip of the stylus is brought into contact with the
measuring surface, and then the ball is pressed against the
measuring surface to detect the position.
④Air-oatswitch(QMH-600BX/
QMH-350BX/QMH-24"BX/
QMH-14"BX only)
Thisswitchusestheair-oatfunctiontoraisethemainunit
of the product.
Donotexecuteameasurementwiththeair-oat
function active because a measurement error may
occur.
⑤Carrier grip Gripped when moving the main unit on the surface plate.
⑥Label
Contains information such as the code number of this product.
⑦Base Is in contact with the surface plate when the main unit is
installed. Held when moving the main unit on the surface
plate.
⑧Micro USB connector
(A/B receptacle)*
Port for connecting a PC with a USB micro A-cable.
⑨Digimatic output connector* Port for connecting the Digimatic mini-processor (DP-1
series, optional accessory).
⑩DC jack* Jack for connecting an AC adapter (optional accessory).
⑪Battery case Case for inserting the batteries.
⑫Probe unit up/down wheel When turned, moves the probe unit up and down.
Slowly turn the wheel to avoid malfunction.
⑬Probeneadjustmentknob Moves the probe unit slowly when pulled and turned.
⑭Clamp screw Fixes the rotational movement of the probe unit up/down
wheel.
⑮Float amount adjustment screw
(QMH-600BX/QMH-350BX/
QMH-24"BX/QMH-14"BX only)
Adjuststheamountofairowwhentheair-oatfunctionis
active.Turningitclockwiseincreasestheairow(amountof
theair-oatow),andturningitcounterclockwisedecreas-
estheairow.
⑯Clamp knob Fixes the free vertical movement of the probe unit itself.
Tips
• Loosen the knob when using the probe normally.
• Tighten the knob when using a lever-type dial gauge (op-
tional accessory).
⑰Holder Used to mount and secure the stylus.
Tips
A lever-type dial gauge (optional accessory) or dial gauge
(optional accessory) can be mounted instead of the stylus.
⑱Stylus The ball on the tip is brought into contact with the work-
piece to perform measurements.
⑲Holder clamp knob Secures the inserted holder.
* During use, we recommend securing the cable part with the supplied cable clamp.

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1 Before Using This Product
No. 99MAF600B
1.2.2 Display Unit
■Operation panel
M1 M2
①
⑧
⑦
⑨
⑩
②
③ ④ ⑤ ⑥
⑪
⑫

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1 Before Using This Product
No. 99MAF600B
Number Name Functions
①Tolerance
judgment
results LED
LED lamp that indicates the result of the tolerance judgment. For details,
see "3.2 Judging the Tolerance" on page 40.
②[Power button] Turnsthepoweronoro󰀨.
③[Inside diameter
measurement] Measures the inside diameter. For details, see "2.4 Measuring the
Inside Diameter" on page 24.
④[Outside diameter
measurement] Measures the outside diameter. For details, see "2.5 Measuring the
Outside Diameter" on page 27.
⑤[Scanning
measurement]
Measures the maximum run-out, minimum run-out, and displacement
value(maximum–minimum)ofaatsurface.
For details, see "2.6 Measuring the Plane Displacement (Plane
Scanning Measurement)" on page 30.
⑥[ZERO/ABS] Switches between the ABS measurement system and the INC measure-
ment system (simultaneously sets the display to zero).
⑦[in/mm] Changes the setting for units between inches and millimeters (only on
models that support inches).
⑧[PRESET] Presets a value for the point of measurement.
⑨[↑]
[→]
[↓]
[←]
[ENTER]
yChanges numbers and settings. Press [ENTER]toconrmanoperation.
yPress and hold [↓] to change the counting direction. Moving the probe
unit upwards decreases the counter value, and moving the probe unit
downwards increases the counter value.
Press and hold the button again to return to normal.
If you have changed the counting direction, follow " 2.1.1 Setting
the Origin and the Reference" on page 12 to set the origin again.
⑩[CANCEL] Cancels a key operation.
Pressed to cancel items such as outside diameter measurements that
have been selected with key operations or measurements that are being
processed.
⑪[MODE] Usedtoconguresettingsforaspecicapplication,suchaschanging
the measurement resolution.
For details, see "3SpecicUsageApplications"onpage33.
⑫[HOLD DATA] Holds the display of a measurement value or outputs the measurement
results to external devices.
For details about outputting data to external devices, see "3.8 Out-
putting Measurement Results to an External Device" on page 52.

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1 Before Using This Product
No. 99MAF600B
■Liquid crystal display (LCD)
① ② ③ ④
⑤
⑥
⑧
⑦
⑩
⑨
Number Functions
①Displays icons which represent measurement operations.
②Indicates the result of the tolerance judgment. For details, see "3.2 Judging the Toler-
ance" on page 40.
③Displayed when registering measurement steps or executing steps that have been registered.
For details, see "3.4 Registering the Order of Measurements" on page 45.
④Displayed when the batteries are depleted. Replace the batteries or use the AC adapter
(optional accessory).
⑤Displayed during the following operations.
y[H]: When a measurement value is being held in the display.
y[ABS]/[INC]: When switching between the ABS measurement system and the INC mea-
surement system.
y[PRESET]: When setting a value for the origin.
⑥
The meanings of the following letters, which are displayed during measuring, are explained below.
y[ZP]:Thedi󰀨erencebetweentwomeasurementvalues.
y[U]/[L]: Upper/Lower tolerances
y[ZD]: Diameter
y[ZL]/[ZS]/[W]: Maximum/Minimum/Displacement
y[mm]: Millimeters (unit)
y[in]: Inches (unit)
⑦Displaysthedi󰀨erencebetweentwomeasurementvalues.Fordetails,see "3.1 Calculat-
ingtheDi󰀨erencebetweenTwoMeasurementValues"onpage33.
⑧Displays the available settings when the [MODE] key is pressed.
⑨Indicates the available keys for an operation.
⑩Displays the counted values or measurement values (results). For details, see "2 Basic
Measuring Methods" on page 11.