Rotate until origins match
・Meas. = Display value -0.001
Clamp
[ON/OFF/SET]Btn.
[ABS/INC]Btn.
LCD Display
Scale
Sleeve Thimble Ratchet
Stop
0-Point Adj. Hole
Jaws
Battery
Cover 【Rear】【Rear】【ACCS.】●Spanner
●CR2032
●Ring Gauge
※Model QEM394-50I shown.
ERROR CORRECTIVE ACTION
※If problem persists, or if you have any questions,
please contact distributor.
※
Please note, manufacturer is unable to respond to inquires
or provide service directly. Please contact distributor.
QEM394-30I
QEM394-50I
6
6φ5mm
φ25mm
QEM394-75I
QEM394-100I
8
8
5
25
50
75
-
-
-
-
30
50
75
100 φ50mm
φ75mm ●
Always clean measuring surfaces with soft cloth before use.
●Do not turn spindle more than 3mm above upper
measurement range.
●When turning Thimble, be gentle and do not apply
force. High force on Thimble will cause inaccuracy.
●This is a precision instrument, handle with care. Do
not drop or subject to excessive forces.
●Keep away form high voltage and strong magnetic
fields. Instrument damage may result.
●Keep instrument away from direct sunlight or high
temperatures such as in a car, or near a stove or
heat source.
●Do not expose to water or oils.
●Do not disassemble or modify.
●After use, wipe with a soft cloth to remove any dirt or
grime, and apply a rust preventative oil before
storage. Keep out of reach of children.
●Please do not use organic solvents to clean the body
of the instrument.
●Remove battery if instrument will not be used for a
long period of time. Batteries may leak if left in
unused instrument for an extended period.
●Only use as directed. Improper use may cause
accident or injury.
●Resolution:0.001mm
●Measured value
is wrong. ●Clean measuring surfaces
with cloth.
●Confirm 0-Point setting and
re-zero with long press of
[ON/OFF/SET]
Button (>2 sec.)
●
When turning Thimble, be
gentle and do not apply force.
●LCD does not
display.
●Displayed value is
unstable.
●Display is not clear. ●Cycle power by removing
and replacing battery.
●Replace battery with new
one. ●Inside Micrometer with digital display
●Constant pressure mechanism (Ratchet Stop)
●Carbide measuring surfaces
●Auto-display-off function (approx. 20 minutes.)
Setting the origin used for normal measurements.
Once set, even when power is off the origin is saved and does not have to be reset with each use.
When battery is replaced, origin will go to default setting. Please reset.
①Remove any grease or dust from the measuring surfaces and Ring Gauge using a clean cloth, such as
a lens cleaning cloth. Make sure no foreign matter is adhered to the measuring surfaces.
②
Loosen the Spindle Clamp and turn the Ratchet Stop to allow the Jaws to fit inside the supplied Ring Gauge.
③Place the Jaws inside the Ring Gauge and turn the Ratchet Stop until the measurement surfaces make
contact and the Ratchet Stop clicks 1~3 times.
※Make sure the Measurement Surfaces are flat against the Gauge. If they are at an angle or misaligned
the measurement reading will not be accurate.
④Press the [ON/OFF/SET]Button for more than two seconds.
LCD will display “SET”for 0.5 seconds. The origin is now set and display will read as shown below:
●QEM394-30I ・・・・・5.000 ●QEM394-50I ・・・・・25.000 ●QEM394-75I ・・・・50.000 ●QEM394-100I ・・・・75.000
Press [ON/OFF/SET]Button to turn power ON; measurement will display on the LCD.
Press a second time to turn power OFF.
For comparative measurements, the display reading can be
zeroed at any position by pressing the [ABS/INC]Button. In this
mode, the zero point is retained in memory.
Press the [ABS/INC]Button again to return to absolute mode.
①Remove any grease or dust from the measuring
surfaces using a clean cloth, such as lens
cleaning cloth. Make sure no foreign objects
are adhered to the measuring surfaces.
②Loosen the Spindle Clamp and position the
Jaws inside the object to be measured.
③With the Jaws inside the part to be measured,
turn the Ratchet Stop until the measuring
surfaces are in contact and the Ratchet Stop
clicks 1~3 times.
④After performing the above measurement, the
accurate measurement is the value displayed on
the LCD display plus the value printed on the Ring
Gauge (the actual dimension deviation)
※Measurement can also be read off Thimble and
Sleeve Scale as with a standard micrometer.
CAUTION
Make sure the Battery
Cover is closed securely.
Please make sure the
gasket is in the proper
place on the Battery
Cover.
●Ex:QEM394-75I
The actual size of the
reference Ring Gauge
shown is "-0.001"
●Ex:QEM394-100I
The actual size of the
reference Ring Gauge
shown is "+0.002"
<Reference Ring Gauge>
・Meas. = Display value +0.002
Spindle
Insulating Cover
Frame※QEM394-30I
QEM394-50Ionly
Spanner
⑤Check to see if the Thimble Scale aligns with the “0”line on the
Sleeve according to the above values.
To align the Thimble Scale 0-Point reference lines.
1. Lock Spindle using Spindle Clamp.
2. Insert the spanner into 0-point Adjustment Hole on rear of
Thimble.
3. Use spanner to rotate Sleeve to align the 0-Point lines.
The gauge is now ready to take measurements.
QEM394-***
Model
No.
INSTRUCTION MANUAL
DIGITAL INSIDE MICROMETER
PRECISION INSIDE MEASURING INSTRUMENT
Thank you for purchasing the Niigata Seiki DIGITAL INSIDE MICROMETER.
●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.
Niigata Seiki Co., Ltd.
5-3-14, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-33-5522 Fax. : +81-256-33-5518
MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp
Included Ring Gauge
Reference is
Ring Gauge
meeting JIS standards.
Included for test.
Please insert a new battery
before use.
Maximum
permissible
error※
(µm)
Included
Ring Gauge
(
Nom.Size.
)
BATTERY SETTING THE ZERO-POINT OPERATION
POWER
INC MODE
①Rotate the Battery Cover on rear
using coin or Spanner.
②Insert battery with “+”side up.
③Replace Battery Cover.
Only use CR2032 type
battery.
Battery
Cover
Open
Act.
Dimension
(deviation)
Nom. Size
Meas. Range
(mm)Model No.
(actual size)
(actual size)