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
Thank you for purchasing the Niigata Seiki COUNT MICROMETER.
This precision gauge measures outside dimension of object placed between the Anvil and Spindle.
COUNT 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.
PART IDENTIFICATION
Model MC122-25C shown
SPECIFICATIONS
ADJUSTING SLEEVE/SPINDLE ZERO SETTING
COUNTER DISPLAY SETTING
OPERATION
FEATURES
SAFETY
HOW TO USE
CAUTION
25
20
30
q v rq
tv
uq
tq
⫰⫱
q
v
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mm
0 0
02
3
1
0
0
5
45
mm
0 0
52
3
1
q
v
uv
mm
0 0
02
3
1
q v rq
tv
uq
tq
mm
1 8
27
8
6
Meas.Range
mm
Model No. Resolution
mm
Maximum permissible
error
µm
MC122-25C
MC122-50C
0 25 0.01 4
40.0125 50
Weight
g
220
300
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.
ACCS.
Always follow the procedures specified below in order to prevent harm to
yourself or others, and to prevent damage to property.
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 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, remove any chips or debris using a soft cloth and take appropriate
rust-preventive measures. Keep out of reach of children.
Please do not use organic solvents to clean the body of the instrument.
Only use as directed. Improper use may cause accident or injury.
Indicates risk of personal injury or property damage
if not followed.
Meas.Surfaces
Carbide Tips
Spindle
0-Point
Adj. Hole Sleeve ThimbleClamp
Ratchet Stop
Counter
Counter Cover Plate
Scale
REAR
FRONT
Thermal Protection Cover
Frame
Gauge includes a Mechanical Counter for use as a quick reference
display in addition to the measurement shown conventionally on the
Sleeve Scale. Please note the following points about the measurement
displayed on the Mechanical Counter:
1. Use the reading from the Mechanical Counter only as a guide.
Since the Counter is a gear driven mechanism, there is some
backlash error and it will not necessarily match the reading on the
Sleeve/Thimble. When there is a discrepancy, please treat the
measurement shown on the Sleeve Scale as the correct value.
The specifications listed for this product are for the measurement displayed
on the Sleeve Scale. The Counter reading is only to be used as a guide.
2. In the unlikely event that the Counter and Scale readings deviate
significantly, use the following procedure to adjust the Counter display.
Please note, before adjustment check that the Sleeve/Thimble zero
setting is correct.
For MC122-50C, use the provided Calibration Standard between the
Measuring Surfaces.Using a precision
type screwdriver, remove the two screws
securing the Counter Cover Plate, and then the two additional
screws holding the Counter Module in place. Fig.4
Remove the Counter for access, and rotate the gear to adjust. Set the
counter to 0.02 0.03 above the reference value. Fig.5
Hold the Counter Module by the outer frame without touching the
counter dials or gears, and replace the Module into the Micrometer
body. Fig.6
If you touch the counter dials or gears the value may change when
being inserted.
Replace the Counter Module screws to secure, and then replace the
Counter Cover Plate and screws.
Use a lens cleaning cloth or similar to clean the Anvil and Spindle of
any grease or debris.
Loosen the Clamp and place the workpiece between the Measuring
Surfaces.
Rotate the Thimble using the Ratchet Stop until the workpiece contacts
the Measurement Surfaces and the Ratchet clicks 1 3 times. Fig.7
A rough reading is displayed on the Counter display.
For a precise measurement please read the value shown on the
Sleeve/Thimble Scale. Fig.8
Workpiece
Hold by outer frame.
Remove
Ratchet Stop
Cover Plate
Screws
Counter
Module Screws
Counter Module
Gear
Cover Plate
Sleeve Reading
Thimble Reading
Measurement (mm)
Rotate the gear to set the
reference value:
MC122-25C 0000
MC122-50C 2500
Set counter to 0002 0003
above ref. value.
Remove any grease or dust from the measuring surfaces using a
clean cloth, such as a lens cleaning cloth.
Make sure no foreign matter is adhered to the measuring surfaces.
With Spindle Clamp loose, turn until measuring surfaces touch.
Turn until Ratchet Stop clicks 1-3 times. Fig.1
For MC122-50C, place the provided Calibration Standard between the
Measuring Surfaces.
If the zero line on the Thimble lines up with the line on the Sleeve, then
the origin is set. Fig.2
If they do not line up, adjust the zero-point according to the procedure
below.
1. Tighten Spindle Clamp to lock Spindle.
2. Insert the spanner into 0-point Adjustment Hole on rear of Sleeve.
3. Use spanner to rotate Sleeve to align the 0-Point lines. Fig.3
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
Meas. surfaces touch
Match origin lines
Rotate until origins match
Click Click
Ratchet Stop
Clamp
Thimble
Spanner
Click Click
Spanner
PRECISION OUTSIDE
MEASURING INSTRUMENT
Model
No.
INSTRUCTION MANUAL
MC122-25C/50C comb
Calibration Std.
Anvil
Fixed Side
For MC122
-
50C only
Mechanical digit counter for quick
and error-free reading
Carbide measuring faces
With ratchet stop
With thermal protection cover
PLEASE OBSERVE
Insert
MC122
-
25C/50C
MC122-25C
I82-K1 2308
URL http://www.niigataseiki.co.jp
25
20
30
q v rq
tv
uq
tq
⫰⫱
q
v
uv
mm
0 0
02
3
1
0
0
5
45
mm
0 0
52
3
1
q
v
uv
mm
0 0
02
3
1
q v rq
tv
uq
tq
mm
1 8
27
8
6
mm mm m
MC122-25C
MC122-50C
0 25 0.01 4
40.0125 50
g
220
300
3mm
1.
2.
MC122
-
50C
0.02 0.03
1 3
(mm)
MC122-25C 0000
MC122-50C 2500
0002 0003
1 3
MC122-50C
.
.
.
MC122
-
50C
/
