Surface Roughness Standards - Complete Scale Set Of 30 Specimens
Features:
- Ideal for checking, identifying and specifying by symbol the degree of roughness of machine parts, covers every machine method known and every obtainable value
- Grade AA values are displayed in micro inch and micron value
- Quick, easy comparisons. Eliminates costly checking methods, saves time, reduces production of scrap caused by poor finishes
- 30 specimens, each 7/8" x 3/8" in size, and made of electro-formed solid nickel
- Each type of surface finish accurately and consistently reproduced to give operator a realistic idea of the feel, appearance and texture of the machined components
- Includes instructions and vinyl wallet