Starrett 257D Surface Gauge

Full size surface gauge, stable steel base, fully hardened and ground with four gauge pins, frictionally held which can be pushed down for referencing the tool. Will hold scribers, rods or indicator stems ranging from 2.4 to 6.35mm (3/32 to 1/4in).

Spindle length: 300 and 450mm (12 and 18in).

Base L and W: 90 x 80mm (3 1/2 x 3 3/16in).