Niigata seiki GHS Series User manual

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0１２３４５６７８９０0.05mm
Object to be measured is positioned
between these surfaces.
Measures extremal dimensions.
Move Slide to open and close.
Measures the height of steps.
Measures internal dimensions. Move
Slide to open and close.
Position surfaces inside object to be
measured.
①
Measuring Surfaces for …
outside measurements
②Outside Jaws
………・
③ Measuring surfaces for …
step measurements
④Inside Jaws …………
・
⑤ Measuring surfaces for …
internal measurements
Indicates measured value in 1mm
graduations.
Bar for measuring depth. Bar moves
in and out with Vernier Slide.
Depth is measured between these
two surfaces.
Press to release Vernier Slide for
taking measurement, releasing will
automatically lock Slide in place.
Scale for measuring with a resolution
of 0.05mm. Refer to following page
for instructions on use.
⑥Main Scale
……………
⑦Depth Bar
……………
⑧
Measuring surfaces for
…
depth measurements
⑨Thumb Lock
…………
⑩Vernier Slide
…………
(Vernier scale)
VERNIER CALIPERS WITH THUMB CLAMP
PRECISION MEASURING TOOLS
ＧＨＳ -＊＊
Model No.
User Manual
Thank you for purchasing the VERNIER CALIPERS WITH THUMB CLAMP
This product is a precision measurement tool with a main scale and a vernier scale to indicate the measured value.
●For safe and proper use of this product, please read this instruction manual before use and follow the procedures described. Please
keep manual where it is accessible to user for future reference.
●Keep this manual with the instrument if transferred or leased to a third party.
●For inquiries about this product, please contact dealer or Niigata Seiki at the address listed on the following page.
■PART IDENTIFICATION AND FUNCTION
SAFETY PRECAUTIONS Please Observe
Always follow the proper operating procedures in order to prevent
harm to yourself or others, and to prevent damage to property.
Read the manual and follow the instructions.
・Use of product other than as described in the manual
may cause accident.
Use only for measuring.
・Use for any purpose other than measuring may
damage or wear the instrument. Improper use may
also cause accident.
Handle with Care.
・Do not drop or subject instrument to excessive shock.
Do not place under heavy objects. Improper handling
may cause damage or poor accuracy.
・Do not scratch instrument, for example by writing ID
number.
Indicates risk of personal injury or property damage if not followed.
WARNING
Denotes a prohibition
-You MUST NOT do
Denotes a requirement
-You MUST do
Use in proper environment.
･Please do not use instrument in rain or locations with
excessive humidity. Do not use at extreme high or low
temperatures. Keep out of direct sunlight.
Jaw Tips are sharp - Handle with care.
･Careless handling may cause injury.
Do not move the Vernier slide without pressing
Thumb Lock.
･Excessive force applied to Slide may cause damage or
affect accuracy.
Do not disassemble or modify.
･Do not remove the vernier slide, Please do not attempt
to disassemble or modify as it may cause damage or
poor accuracy.
①Measuring surfaces for
external measurements
②Outside Jaws
③
Measuring surfaces for
step measurements
⑤Measuring surfaces for
internal measurements
⑨Thumb Lock
⑩Vernier Slide (Vernier Scale)
⑥Main Scale ⑦Depth Bar
⑧Measuring surfaces for
depth measurements
④Inside Jaws
CALIBRATION
●In order to maintain instrument accuracy, it is recommended that
accuracy is confirmed through calibration on a periodic basis.
Wear of measuring surfaces from repeated use may affect accuracy and periodic
accuracy checks should be performed.
We provide calibration services.
Please contact agent in country of
purchase to make arrangements.

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0１ ２ ３ ４ ５ ６ ７ ８ ９ ０ 0.05mm
PREPARATION FOR USE
Before using the caliper, follow the steps below:
●Do not apply excessive force to Vernier Slide. Pushing against slide, or attempting to move without pressing the Thumb Lock may
cause damage or inaccuracy.
●Wipe off any corrosion, dirt or oil from measuring surfaces and slide.contamination of surfaces may cause measurement error.
●Allow the caliper and object to be measured time to reach the same temperature.A temperature difference between the object to be
measured and the caliper may cause measurement error. Allow enough time for the temperatures to equilibrate.
●Performing an accuracy check.
①Jaw Alignment
In closed position, make sure the measuring surfaces on the outside
jaws align properly and there is no gap (no light should leak past.)
②Confirm “0”points on scale (see diagram at right)
With jaws closed as in step ①above, make sure the reading is zero and
the vernier scale graduations align at the “0”and “39”positions as shown.
③Depth Confirmation
Position caliper on a flat surface for depth measurement. Reading should
be “0”as in step ②above, with the vernier graduations aligned at the “0”
and “39”positions.
READING THE SCALE
The measured value is determined by reading the main scale,
and then adding the Vernier Scale reading as determined by
the position where the vernier and main scale graduations align.
PREVENTING ERRORS
In order to prevent measurement error, please note the following.
AFTER USE CARE, STORAGE NOTES
I254-K 1508
●Material : Stainless Steel
GHS-15
0〜150mm
GHS-20
0〜200mm
0.05mm
±0.05mm
Model No.
Measuring Range
Resolution
Accuracy
SPECIFICATIONS
●As required, wipe slide and measuring surfaces with a dry
cloth treated with anti-corrosive oil. When not in use, apply
anti-corrosive treatment or keep in anti-corrosive bag.
●When not in use, keep jaws slightly open to prevent thermal
expansion from creating excessive forces on jaws and
affecting accuracy.
●Store in supplied case when not in use in a cool, dry location.
●EXAMPLE１
Measured value = Main Scale Reading + Vernier Scale Reading
77
0.00＋
77.00
Reading
Reading
Reading
77
0.30＋
77.30
77
0.35＋
77.35
Measured Value: 77.00㎜
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0１２３４５６７８９０0.05mm
Main Scale
（1㎜）
Vernier Scale
（0.05㎜）
Main Scale
（1㎜）
Vernier Scale
（0.05㎜）
Main Scale
（1㎜）
Vernier Scale
（0.05㎜）
●EXAMPLE２Measured Value: 77.30㎜
７８９10 11 12
0１２３４５６７８９０0.05mm
７８９10 11 12
●EXAMPLE３Measured Value: 77.35㎜
0１２３４５６７８９０0.05mm
POSITIONING CALIPER ON OBJECT
VIEWING THE SCALE
Object being measured
Jaw
012345
0１２３４５６７８９０0.05mm
Proper alignment
＜Flat surfaces＞
When measuring features
with flat surfaces, make sure
the measuring surface of the
jaws are parallel to the
surfaces to be measured.
＜Cylindrical surfaces＞
When measuring cylindrical
features, make sure the
caliper jaws are perpendicular
to the cylinder axis as shown.
Scale should be read from
directly above the calipers.
Due to step in height of vernier
scale relative to main scale, if
viewing direction is not directly
above the reading may have
parallax error.
Niigata seiki Co., Ltd.
6-15-22, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : [phone] Fax. : [phone]
MAIL:[email protected]
URL http://www.niigataseiki.co.jp