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We have put together a frequently asked questions from users of everyone


Within NC lathe turning machine, measurement of inner and outer diameter of X axis, taper angle / cylinder degree measurement, Accurate measurements of deep holes and steps and angle measurement of the C axis can be performed.

For 1/100 mm display caliper and depth caliper, 1 μm can not be measured. High precision measurement of 1 μm in the machine is possible.

Work asked to tight tolerances For example, suppose you want to machine the workpiece, such as shown in the figure below in the NC lathe-turning, whether the finished drawing street, to confirm.

φ60 hole in the first stage can not be measured with calipers and depthcaliper.
φ40 hole of the second stage is also can not measuer with a caliper.
Therefore, as shown in the figure, measure the depth measurement with "point finder L"given a long stylus.

刃物台にポイントファインダーを取り付けて計測開始
①Attach "point finder L" to the tool post and hit it on the reference surface.
Operate the pulse handle so that the tip of the stylus hits the reference surface and the LED lights up.
基準面の決定
If the LED is lit, it is the sign that the stylus touches the reference plane.

基準面の決定

基準面の決定

②Reset the Z axis of "0.000" display on the CRT screen with this as the reference plane.
③Operate the pulse handle again and then measure the depth of the hole of φ60.
At the position where the LED is lit, confirm the Z axis coordinates. This value represents the depth.
The bottom screen shows the hole depth of 20 mm.


φ60の溝穴深さ測定
φ60の溝穴深さ測定
④Next, measure the depth of the hole of φ40.
When the tip of the stylus comes into contact with the surface of the hole, the LED lights,
this value is the measurement value of the Z axis.It is possible to measure the depth of 80 mm.
of the hole which can not be measured with the caliper and Depth caliper with an accuracy of 1 μm.
φ40の溝穴深さ測定
φ40の溝穴深さ測定



刃物台にポイントファインダーを取り付けて計測開始
基準面の決定

①Move the X axis in the - direction and put it in the front position (Z: -10.000 from the end face),
place the X axis in front of - direction and reset the X axis at the position where the LED lights up.
刃物台にポイントファインダーを取り付けて計測開始
基準面の決定

②Move the X axis in the + direction and stop at the point where the LED emits light.
X: 112.000 was displayed.
112.000 / 2 = 56.000 (Lathe is 2Xdoubled)
56.000 + 4.000 (diameter of stylus) = 60.000 (inner diameter size)
In case the stylus of the point finder L does not match the axis center the inner diameter is displayed small.
Check with the cylinder gauge and correct the error.


If the 0.1 mm center is misaligned, the X axis of the monitor will be displayed as 111.9992.
111.9992 (It is 2Xdoubled on the monitor) ÷ 2 = φ 55.9996
The actual diameter is φ55.9996 + φ4.000 = 59.9996.
If the 1 mm center is misaligned,
the X axis of the monitor will be displayed as 111.928.
Please correct 0.036 mm.
刃物台にポイントファインダーを取り付けて計測開始
刃物台にポイントファインダーを取り付けて計測開始

①Put the stylus of the point finder L to an arbitrary point and reset the coordinates of the X and Z axis monitor screen.
基準面の決定

②Apply the stylus to the position you want to measure.
At the position where the LED is lit, the trigonometric function tan θ = X/Z is obtained from the coordinates of the monitor using a scientific calculator.
③Since the X axis 10.095 of the monitor is the diameter display,
change it to 1/2 and change it to 5.045.
The Z axis of the monitor is 30.000
From tan ϴ= 5.045/30, ϴ =9.5506 One side angle ϴis 9°33'03'.
φ60の溝穴深さ測定φ60の溝穴深さ測定
刃物台にポイントファインダーを取り付けて計測開始

基準面の決定

基準面の決定
Please use it to check the precision of NC lath turning C axis

Product Specifications

Point Finder L (external contact method)
Model Stylus Shank Specification
 S10WPL
ST-4×40NM付
ST-4×80NM付

φ4×40L
φ4×80L
φ10 Lithium battery
BR-435(1)
 S20WPL
ST-4×40NM付
ST-4×80NM付

φ4×40L
φ4×80L
φ20 Alkaline battery
LR1SG-2BHD 2
 S32WPL
ST-4×40NM付
ST-4×80NM付

φ4×40L
φ4×80L
φ32 Alkaline battery
LR1SG-2BHD 2
Point Finder L-i (Internal Contact Type)
Model Stylus Shank Specification
S10WPL-i
ST-4×40NM付
ST-3×29NM付

φ4×40L
φ3×29L
φ10 Lithium Battery
BR-435(1)
S20WPL-i
ST-4×40NM付
ST-3×29NM付

φ4×40L
φ3×29L
φ20
Alkaline battery
LR1SG-2BHD 2
S32WPL-i
ST-4×40NM付
ST-3×29NM付

φ4×40L
φ3×29L
φ32
Alkaline battery
LR1SG-2BHD 2

Dimensions

Point Finder L outline drawing

Model D B L weight(g) Battery (included) Remarks
S10WPL
φ10 46 193.6 280 Lithium battery
BR-435 1
With standard ST-4x80NM stylus
External contact method
Waterproof
S20WPL
φ20 65 212.6 360 Alkaline battery
LR1SG-2BHD 2
S32WPL
φ32 65 212.6 610

Please contact us if you have any hope of  not shank size stylus above.

Please contact us in regard price and inventory.
Specifications, dimensions are subject to change without notice.