The 3753A Electronic depth gauge is a versatile, easy to use tool for measuring depth, slot widths and positions and lengths.
Standard: Starrett factory specification
Hardened stainless steel measuring surfaces
Fine adjustment thumb wheel
Lock screw for sliding base
Hardened base measures 100mm (3-15/16" ), with optional base extensions of 180mm (7-1/8" ), 260mm (10-1/4") and 320mm (12-5/8")
A hook attachment is supplied with the gauge, making it possible to take readings from the edge of slots, grooves and shoulders. The hook is removable if required