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DIAL GAUGE
Dial Indicator / Comparator
PROFESSIONAL
Model No.
User Manual
■
APPLICATIONS
■
PART IDENTIFICATION, FUNCTION
※
Model WDI-0558SP shown
・Comparing parts to a master part during inspection
・Measuring machine tools positioning accuracy
・Measuring runout for rotary shafts
・Checking vise parallelism on milling machines
・Measuring flatness of surfaces and assemblies
・Confirming machine tool feed distance
Thank you for purchasing the Niigata Seiki Dial Gauge.
Used with a Magnetic Base or Indicator Stand, this gauge will show the difference in height or position
relative to a zero point set at a reference position.
●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.
⑨ Contact Point (Probe
)
⑧ Spindle
⑦ Stem
② Pointer
(Needle
)
④ Bezel Clamp
Screw
⑩ Bezel
(
φ8ｍｍ
)
⑪ Flat Rear Plate
① Limit Markers
③ Main Scale
(Indicator Face
)
⑥ Rev. Counter
Scale
⑤ Revolution
Counter
⑫ Lug
⑬ Mounting
Hole
(
φ6. 5mm
)
⑭ Rear Plate
with Lug
※To Use the Rear Plate with
Lug, unscrew the Standard Flat
Rear Plate screws, replace,
and use screws to secure.
[
Accessories
]
SAFETY NOTIFICATIONS
Throughout this manual, “ ” symbol indicates
RISK OF PERSONAL INJURY OR PROPERTY
DAMAGE if not followed.
The “ ” symbol indicates something which is
PROHIBITED, and the “ ” symbol Indicates
REQUIRED step or necessary condition.
DI-10KD
WDI-10
DI-1058
WDI-0342
WDI-0542
WDI-0558SP
WDI-1058SP
WDI-0158SP
①Limit Markers For marking acceptance
range for Pass/Fail testing
②Pointer (Needle) Shows measurement on Main
Scale
③Main Scale Main Scale, rotate Bezel (⑩)
to turn
④Bezel Clamp Screw Clamps Scale to prevent
rotation
(DI-10KD/WDI-0558SP/
WDI-1058SP/WDI-0158SP only
)
⑤Revolution Counter Pointer indicates Main Scale
×100
⑥Rev. Counter Scale Each division is Main Scale
×100
⑦Stem For holding and mounting
Gauge
⑧Spindle Shaft moves up and down
with measurement
⑨Contact Point Probe which contacts
workpiece
⑩Bezel Rotate to turn Main Scale (③)
⑪Flat Rear Plate Standard back cover
⑫Lug Alternate mounting point
⑬Mounting Hole For mounting Gauge
⑭Rear Plate with Lug Accessory back cover for
mounting Gauge using Lug
SAFETY PRECAUTIONS
PREPARATION - Mounting
WARNING
Indicates risk of personal injury or property damage if not followed.
Please Observe
Always follow the procedures specified below in order to prevent harm to yourself or others, and to
prevent damage to property.
Dial gauge must be securely mounted such as on a comparator stand or magnetic base.
Please follow these guidelines.
■Content marked as follows indicates risk of injury or damage if not followed．
CAUTION
Denotes a prohibition – You MUST NOT do． Denotes a requirement – You MUST do．
■These symbols mark content that must be observed.
Read the manual and follow all instructions.
・Use of product other than as described in the
manual may cause accident.
Use only as indicator Gauge.
・Use for any purpose other than measuring
may damage or wear the instrument.
Improper use may also cause accident.
Use in an environment which meets the
following conditions:
●Temperature within range of 0~40°C、
humidity 30~70% (non-condensing.
)
●Location with minimal dust, oil, oil mist,
and protected from direct sunlight.
●Location protected from use by children
and unauthorized people.
・Use in location contrary to the above may
cause poor accuracy, damage to the product,
or may result in accident or injury.
Handle With Care.
・Do not drop or subject to shock, do not place
under heavy objects. Damage may cause
failure or poor accuracy.
Make sure Gauge holder is rigid.
・Holder must be sufficiently secure to prevent deflection
from the weight of the Gauge.
・Holder must be rigid enough to hold Gauge and not to
lift from measurement force.
・Holder support arm should be as short as possible to
prevent deflection.
※Deflection or lifting will cause measurement error such
as origin position error and inaccuracies in measured
reading.
Dial Gauge must only be attached by Stem or Rear Lug.
・Mounting of gauge by other than Stem or Lug will cause
inaccuracy and product damage.
During installation, do not over-tighten the Stem.
・Excessive force on the Stem may cause Spindle to bind.
Do not disassemble or modify.
・It may damage Gauge and cause poor
accuracy
・If Bezel Clamp Screw is removed, internal
components may come loose and become
misaligned causing product failure.
Do not shock Spindle.
・Rapid motion, or lateral force may damage
Gauge and cause poor accuracy.
Gauge Holder
Support Arm
⑦Stem
※Mounting Example
Minimize Length
No Rapid Motion No Lateral Force
HOW TO USE - Preparation
①Confirm that the Contact Point and Rear Plate are tightly fastened.
If loose, tighten Contact Point and Rear Plate Screws.
②Attach to the Gauge Holder using the Stem or Rear Lug.
Mounting Gauge by other than Stem or Lug will cause inaccuracy and product damage.
③Confirm that Pointer and Revolution Counter movement is smooth.
Using fingertip, gently press on Contact Point to move the Spindle up and down. Motion of Pointers should be
smooth. If it is not smooth make sure Stem is not clamped too tight, and adjust. Also make sure Pointer is stable
at set position.
④Make sure Spindle axis is perpendicular to measured surface.
If Spindle (Contact Point) is not at a right angle to
surface, Gauge will not operate properly and
measurement will be inaccurate. Always keep the
Spindle axis perpendicular.
※When used to check parallelism of Milling
Machine vise, use a Magnetic Base to mount the
Gauge perpendicular to surface, and move it out
of the way during operation to prevent
interference.
HOW TO USE - Comparison Measurements
①Set Up Reference Part.
Carefully lift Spindle with fingertip, and, taking care not to
hit Spindle from the side, insert the Reference Part or
Master under Contact Point.
②Set the Origin.
Adjust the gauge mount or rotate the Bezel to set the
Gauge to "0".
③Remove Reference, and begin measurements.
Remove Reference or Master, careful not to shock Spindle.
Insert part to be measured and read the measurement off
the Scale.
※Setting the Limit Markers
Limit Markers can be moved to show acceptance range
for measurements.
HOW TO USE - Parallelism, Flatness, Runout, etc.
①Position Contact Point on surface.
Carefully lifting Spindle with fingertip, and taking care not to hit Spindle from the side, position the surface to be
measured under the Contact Point.
②Set the Origin.
Adjust the gauge mount, or rotate the Bezel to set the Gauge to "0".
③Read the scale as the measured part is moved.
Slowly move the part while monitoring the Pointer and reading the measurement.
Right Angle
② Pointer
① Limit Markers
Ex.) Pass Range :
−0.05 to ＋0.15mm
Measured Object Measured Object
TROUBLESHOOTING
SPECIFICATIONS
■Origin position shifts during measurement.
・Temperature changes during measurement can cause repeatability error. Please try the following solutions:
●Use in location with constant temperature.
●When taking measurements, periodically adjust zero point using a Master reference to correct for temperature
induced drift.
■Measurement is not stable, or measurement accuracy is poor.
・Contact Point may be worn.
Worn Contact Point will affect accuracy. Periodically check for wear, and replace if wear is affecting measurement
accuracy.
Remove any dust or dirt after use. ※Do not lubricate.
・Wipe any contamination from Spindle sliding surface using a dry cloth, or cloth moistened with alcohol.
・To clean other surfaces, wipe with a soft dry cloth, or a cloth moistened with a mild cleaner.
Check for wear of Contact Point.
・Measurement accuracy will be affected by worn Contact Point. Regularly check for wear and replace
Contact Point if worn.
Store in provided case in a cool, dark, and dry location.
・During storage, make sure there is no force on the Spindle (such as pushed in, or lateral force.
)
・Keep away from moisture and direct sunlight, and secure from unauthorized personnel.
I3 60 -K1 1808
Niigata seiki Co., Ltd.
6-15-22, Tsukanome, Sanjo, Niigata, Japan, 955-0055
Tel. : +81-256-31-5670 Fax. : +81-256-39-7730
MAIL intl.sales@niigataseiki.co.jp
URL http://www.niigataseiki.co.jp
CALIBRATION
●
Replacement Contact Point Part No.：DI-10KD…DI-CPK、WDI-10･DI-1058･WDI-0342･WDI-0542…DI-CP
WDI-0558SP･WDI-1058SP･WDI-0158SP…WDI-W
AFTER USE CARE, STORAGE
To maintain measurement accuracy, periodic calibration is recommended.
(
For reference, we recommend a calibration interval of 3~4 months when used in a factory.
)
Outside Japan, Please contact distributor or place of
purchase to inquire about calibrations services.
DI-10KD
WDI-10
DI-1058
WDI-0342
WDI-0542
WDI-0558SP
WDI-1058SP
WDI-0158SP
0.01
0.01
0.01
0.01
0.01
0.01
0.01
0.001
5
5
5
6
6
3
3
2
≦
1.5N
≦
1.5N
≦
1.5N
≦
1.5N
≦
1.5N
≦
1.5N
≦
1.5N
≦
2N
1
1
1
0.5
0.5
1
1
0.2
0〜10
0〜10
0〜10
0〜 3
0〜 5
0〜 5
0〜10
0〜 1
±0-100
±0-100
±0-100
±0-50
±0-50
±0-100
±0-100
0-100-0
Model No.
Scale
Contact
Point
125
180
180
100
100
190
190
190
Weight
(g)
Graduation
(mm)
Measurement
Range
(mm)
Retrace
Error
(μm)
Measuring
Force
(N)
Range
(
1 rev.
)
(mm)
8
8
8
8
9
8
10
3
±20
±20
±20
±14
±16
±16
±20
± 5
5
5
5
5
5
3
3
0.3
Adjacent
Error
(
1/10rev.):
(μm)
Full Range
Accuracy
(μm)
Repeat
Accuracy
(μm)
Carbide
Ball
Steel
Ball
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