The tube micrometer spherical anvil/spindle has 25 to 50 mm and measures curved surfaces such as the wall thickness of tubes, bearings, and rings.
The tube micrometer spherical anvil/spindle has 25 to 50 mm and measures curved surfaces such as the wall thickness of tubes, bearings, and rings.
| Range | 25 to 50 mm | 
| Mass | 240 g | 
| Graduation | 0.01 mm | 
| Measuring Surfaces | Spindle and anvil: carbide-tipped, micro-lap finish (115-1xx, 115-2xx) spindle: carbide-tipped, micro-lap finish, anvil: hardened steel (115-3xx) | 
| Digital/Analog | Analog | 
| Scale | Thimble and sleeve satin chrome finish, ø18 mm | 
| Measuring Spindle | With spindle lock, ø6.35 mm , spindle pitch 0.5 mm | 
| Measuring Force | 5 - 10 N |