Chromium plated steel frame.
Spindle and anvil made of hardened steel with carbide tiipped measuring faces.
Rapid drive with integrated ratchet.
Span of errors is .00016" and the pitch of spindle threads .025
Operating and scale parts with satin chromium finish.
Locking device.
Heat insulators.
Includes: case, setting standard (starting with measuring range 1-2") operating systems.