INSIZE 4812 Series Thread Angle (Fish Tail) Gauge Range:Model 4812-E Open to the Estimated Slot

Open to the Estimated Slot - Rotate to the leaf closest to the expected thickness

Scribe with the Other Point - Rotate to scribe an arc

Layout and Marking Use - Ideal for scribing circles

Match Speed to Material - Reduce RPM in heat-sensitive alloys to avoid work-hardening the surface

INSIZE 4812 Series Thread Angle (Fish Tail) Gauge Range:Model 4812-E Open to the Estimated SlotINSIZE 4812 Series Thread Angle (Fish Tail) Gauge Fish tail thread angle gauge for checking and setting the angle and pitch of Acme and similar trapezoidal thread forms on the lathe. Features Fish Tail Profile Distinctive shape sets and checks thread angle directly against the tool or part Acme Thread Angle Ground to the correct angle for Acme (30) thread forms Pitch Markings Marked with common pitch values for quick reference Hardened Steel