844 NH Self-Centring Dial Bore Gage

4475001KAL Includes Only:measuring holdermeasuring headanvil spindlewooden caseexcludes indicatorFeatures and Application:Measuring the diameter, roundness and conical form of a bore as well as the distances of parallel plane surfacesMeasuring head consists of a carbide-tipped, movable measuring pin and an opposing interchangeable stationary counter probe with carbide ballMovements of the measuring pin are transmitted to the indicating instrument via the ring segmentThe broad centering bridge ensures automatic centering in the boreInsensitive to temperature due to both the shaft and the transfer rod being made from Invar steelCarbide-tipped measuring contacts for high wear resistanceConstant measuring force thanks to inbuilt measuring force spring. Measuring results are therefore independent of personal sense of touchUniversally applicable. Every instrument Spans a broad Measuring Range. Within this range it is quick and easy to adjust to any sizeMeasuring head, measuring instrument holder, depth extensions, right-angle attachments, and depth stops form a comprehensive modular systemInvar steel makes the inner measuring device insensitive to temperature influences of any kind. Body heat from the user or a rise in ambient temperature in the workplace have virtually no influence on measuring results.