Suyash Preci - Lap Aids manufactures Carbide made Ring Gauges. Suyash Preci - Lap Aids is an ISO 9001:2008 certified company. The Carbide made Ring Gauges are of special wear resisting grade is fitted in steel body. Steel Body protection to carbide ring and makes it easy to handle. The Ring Gauges are ground and lapped to excellent surface finish. The Carbide made Ring Gauges ranges from 6 to 40 mm.