The 3 on 1 measuring tool for wood, linoleum, plastic, plaster, & other materials. Calibrated in 16ths of an inch. No. 62710. The 6” combination stainless steel inside/outside caliper used for precision measurements of holes or objects up to 10”. No. 69280. The 6” outside spring caliber for mechanics, machinists, carpenters, students, hobbyists, etc.