RSK
Standard Steel Straight Edge
- Made of finely seasoned carbon tool steel and ground finish .
- This rule is used as a standard for the precise inspection of flatness, straightness, etc. of various workes and for the precise marking-off.
- A-Class Hardened to HS65 or more.
- Not hardened.
![Knife-Edged-Standard-Square-[Ⅲ-Type]-02](https://www.sumipol.com/wp-content/uploads/2019/11/Knife-Edged-Standard-Square-Ⅲ-Type-02-300x169.jpg)
