This is a very nice clean, used radius gage set in inside and outside radius sizes from 1/32" to 1/4" on a center pivot pin so that each of the gauges can be used individually. The gage is marked "THE L.S. STARRETT CO. ATHOL MASS U.S.A. NO. 178-A" on one side. Overall in very good working condition, the 1/32" inside radius gage has some minor modifacations on it that don't effect the gage, just gave it a bit more cleanence for a particular application. In nice shape overall, no rust, a few tiny specks of pitting, very clean, with minimal wear overall.