Features:
- 844 N and 844NH
- Measures the diameter, roundness and conical form of a bore as well as the distances of parallel plane surfaces
- Measuring head consists of a carbide-tipped moving anvil and an interchangeable stationary anvil which has a hardened steel ball; alternatively a carbide ball is available
- Insensitive to temperature due to both the shank and transfer rod being made from heat resistant Invar steel
- Constant measuring force due to built-in spring thus eliminating user influence
- Includes holder, measuring head, stationary anvil, wooden case (excludes indicating instrument or extension)