Starrett 683-3Z 0°–90° 0.001 in Dial Chamfer Gage

The Starrett 683-3Z is a dial-type internal chamfer gage manufactured by The L.S. Starrett Co. of Athol, Massachusetts, USA — confirmed by the rear label visible in the photos. The gage measures chamfer diameters over a 0°–90° angular range with a graduated dial reading in 0.001 in increments, as stated on the dial face; the unit is factory set to 0.011 in per the rear calibration label. The tool body features a conical contact head with a knurled locking ring and adjustment collar for seating squarely against internal chamfers, countersinks, or chamfered bores, providing repeatable contact and consistent diameter readings across production inspection tasks. This example is in new — other condition and is stored in its original fitted red Starrett tin case with foam insert, which houses the gage body separately from the dial head for safe transport and storage. Typical applications include QC verification of countersunk holes, chamfered bores, and 82°/90° countersinks in precision machined components.

Product Specifications