Made of black gabbro.
As the standard for squareness measurement, it maintains high accuracy.
Used to measure the right angles of installation fixtures and tools, the right angles of products, etc.
Because the contact surface with the workpiece is a line on a circular surface, extremely precise measurements can be made.
![](https://www.jys-ims.com.tw/wp-content/uploads/2023/08/石製圓柱型直角規-300x262.png)
![](https://www.jys-ims.com.tw/wp-content/uploads/2023/07/LOGO-300x63.jpg)
Made of black gabbro.
As the standard for squareness measurement, it maintains high accuracy.
Used to measure the right angles of installation fixtures and tools, the right angles of products, etc.
Because the contact surface with the workpiece is a line on a circular surface, extremely precise measurements can be made.
model |
Form size |
size
(H×φmm) |
right angle
(μm) |
weight
(kg) |
FP101 |
200 |
200×80 |
3.0 |
3.5 |
FP102 |
300 |
300×100 |
3.5 |
7.5 |
FP103 |
500 |
500×130 |
4.5 |
20.5 |
FP104 |
600 |
600×160 |
5.0 |
37 |
* All sizes above 300mm are equipped with handles.