D2

Measuring instruments for industrial and commercial use in precision dimensional measurement of manufactured articles, namely, micrometers, calipers for measuring various machine parts and assemblies, instruments for making internal measurements, namely, internal length measuring gauges, height measuring gauges, bore diameter measuring gauges, depth gauges, linear length measuring gauges, and thickness measuring gauges, all having an electronic digital display and electronic data processors for processing and displaying measurement data received from the foregoing instruments, sold as a unit