The disc micrometer hardened steel has 125 to 150 mm with a 30 mm disk and measures the root tangent length of the spur and helical gears and other hard-to-reach features.
The disc micrometer hardened steel has 125 to 150 mm with a 30 mm disk and measures the root tangent length of the spur and helical gears and other hard-to-reach features.
| Accuracy | ±7 µm | 
| Flatness | 1.6 µm | 
| Parallelism | (5+L/75) µm, L=max. Range | 
| Range | 125 to 150 mm | 
| Mass | 570 g | 
| Digital/Analog | Analog | 
| Graduation | 0.01 mm | 
| Scale | Thimble and sleeve satin chrome finish, ø18 mm | 
| Measuring Spindle | With spindle lock, ø6.35 mm, spindle pitch 0.5 mm |