Instruction Manual

DIAL BORE GAUGE

Model No.：WCDI-35

Thank you for purchasing the Dial Bore Gauge.
Please read this manual thoroughly before use for proper operation.

■ SPECIFICATIONS■PART IDENTIFICATION器

Rev. Cntr.

Gauge(1 rev. = 1mm)

Accessories

Bezel
Rod Adj. Nut

Pointer（0.01mm）(Installed on main unit)

Gauge
Face

CapClamp
Screw

Extension RodHandle

Rod Adj. Nut130mm

Extension Rod

Measurement
Head

WCDI-35
Dial Gauge（ｍｍ） 18〜35
Measuring Range（ｍｍ） 0. 01
Graduation＊Wide Range Accuracy（μｍ） 15（μｍ）
5＊Adjacent Error
3＊Repeat Accuracy （μｍ）
Single Stroke Range （ｍｍ） 1. 0（ｇ） 300
WeightExtension Rods：
18. 0〜 2 0 .5 m m
20. 5〜 2 3 .0 m m
23. 0〜 2 5 .5 m m
25. 5〜 2 8 .0 m m
28. 0〜 3 0 .5 m m
30. 5〜 3 3 .0 m m
33. 0〜 3 5 .5 m m（7 pieces）
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NOTICE

Length below HandleShaft＊ Including supplied Dial Gauge

Probe TipGuide● This is a precision instrument, handle with care.
● Do not disassemble or modify.
● Keep instrument away from water and oil.
● Use only with provided Extension Rod and Rod Adj.
Nut.
● Keep instrument away from direct sunlight and hightemperatures such as in a car, or near a stove or heatsource.
● After use, remove dust and cutting chips, and apply
rust preventative oil to Extension Rod and Rod Adj.
Nut. When not in use store in supplied storage case.
● This product is for measuring inside diameter; use
only as directed. Improper use may cause accident orinjury.

■ ASSEMBLY① Loosen the Clamp Screw and insert the Dial Gauge until
the Pointer rotates 1/10 turn or more. Tighten the Clamp
Screw to secure.
1/10 rotation
or moreInsertClamp
Screw② Select the Extension Rod for the dimension you want to measure.
Remove the Rod Adj. Nut, remove the Extension Rod, and replacewith the desired Rod.
③ Adjust the Rod length as required for the measurement.
The Rod length can be set to any dimension within the specified
range. Measure the length from the Probe Tip to the end of theRod, and screw in the Rod to adjust. Set that length to about
0.5mm longer than the dimension you want to measure.
Confirm the desired length, and then screw the Rod Adj. Nut tightagainst the Measurement Head to secure the Rod.
Ex.）Set for 25.5〜28.0mm

Rod Adj.
NutExt. Rod
25.5〜28.0 mm

25.5mmMeasurement

about 26mm

（25.5mm＋0.5mm）

28.0mmMeasurement

about 28.5mm（28.0mm＋0.5mm）

■ OPERATION※Before use, please make sure the Measurement Head is
not loose on the Handle. Tighten as necessary.

�SETTING THE 0-POINT① Prepare a Ring Gauge to use as a reference standard
for setting the zero-point. Insert the Measurement Headinto the ring gauge.

② In the direction perpendicular to the Ring Gauge axis,

position the Bore Gauge to measure diameter ⓐ shown inthe cross section (Figure 1). This is the maximum distance,
and the Dial Gauge will show the minimum reading. The
Guide moves to automatically position the Gauge Head at
this diameter when inserted.

（Figure１）③ In the cross section shown in Figure 2, parallel the Ring

Gauge axis though diameter ⓐ, position the Bore Gauge tominimize the distance ⓑ. In this position the Dial Gauge
will read the maximum value.
This position is determined by manually moving the gauge
and noting the position where the Pointer shows themaximum value. (Figure 3)④ The reading obtained at step ③ is the zero-point. Rotate
the bezel of the gauge until the Pointer is at the zero pointof the Gauge Face. (Figure 4)ⓑ（Figure２）（Fig.３）

Set to Zero

Bezel

MEASUREMENT
Insert the Measurement Head of the Bore Gauge into theobject to be measured. As in step ③ of “Setting the 0Point” above, pivot the gauge while checking the pointerto determine the diameter ⓑ where the indicator willshow the maximum value to determine the measurement
reading.
This measurement will be the difference in diameter
between the part, and the reference Ring Gauge.

Rotate（Figure４）■ REPAIRS AND SERVICE● If Gauge does not operate properly, or if you have any questions, please contact distributor or place of purchase.
● Please note, manufacturer is unable to respond to inquires or provide service directly. Please contact distributor orplace of purchase.

Niigata Seiki Co., Ltd.
6­15­22, Tsukanome, Sanjo, Niigata, Japan 955­0055

TEL: +81­256­31­5670 FAX: +81­256­39­7730

MAIL: intl.sales@niigataseiki.co.jp

URL http://www.niigataseiki.co.jp

I387­K1810