DIAL BORE GAUGE

Instruction Manual
Model No.：WCDI-6

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

■ PART IDENTIFICATION■ SPECIFICATIONS

Dial GaugeBezel＊Including supplied Dial Gauge

Dial Gauge
Measuring Range（ｍｍ）

Graduation（ｍｍ）＊Wide Range Acuracy （μｍ）

Pointer＊Adjacent Error（0.01mm）＊Repeat AccuracyGauge
Face

Rev. Counter(2 rev. = 1mm)

Clamp
Screw

CapHandle（μｍ）（μｍ）

Single Stroke Range（ｍｍ）

Weight（ｇ）

WCD I - 64〜 60.01
10530.6175

ACCESSORIES● Four (4) Probe Tips for following range: 4.0〜4.6 mm● Probe Needle ･･････１

4.5〜5.1 mm
5.0〜5.6 mm
5.5〜6.1 mm(Note: When purchased, Probe Needle
is inserted into Measurement Head)● Spanner ････････････１

Length below Handle

ProbeNeedle

42 mm

Probe
Tip
MeasurementHead■ 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 moreProbeTip×４ProbeNeedleSpanner② Insert the Probe Needle into the Probe Tip andscrew onto the end of the Handle. Using Spanner,tighten to secure.
※ Select Probe Tip to match the desired measurement range.

Probe
NeedleInsertInsert

Clamp
Screw

Spanner

Probe
TipHandle
AttachProbeTip■ 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 Gauge Head will automatically sit in thisposition when inserted.

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

Gauge axis though diameter ⓐ, position the Bore Gauge
to minimize the distance ⓑ. In this position the Dial Gauge
will read the maximum value.
This position is determined by manually moving the gaugeand 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）

MEASUREMENT（Figure３）

Bezel

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.

Set to ZeroRotate

This measurement will be the difference in diameter
between the part, and the reference Ring Gauge.

（Figure４）

NOTICE●This is a precision instrument, handle with care.

●Do not disassemble or modify.

●

Keep instrument away from water and oil.

●Use only with supplied Probe Tip and Probe Needle.

Keep instrument away from direct sunlight and high temperatures such as in a car, or
near a stove or heat source.
● After use, remove dust and cutting chips, and apply rust preventative oil to to Probe
Tip and Probe Needle. 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 or injury.

■ 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 or place 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

I385­K1810