This Surface Gage has a coarse-adjusting clamp for upright post, fine-adjusting knob and baked-enamel-finished, hardened-steel base The two gage pins provided are held tightly against the base The rocker runs the entire length of the base and pivots against a heavy spring, allowing a wide range of fine adjustment, yet holding the tip of the scriber firmly Surface Gauge accepts ø3/8", 5/32" (9.5mm, 4mm) stems.

Storm 02609, 250mm Surface Gauge