iGAGING Digital Rotor Caliper Gauge 3.5" Long Reach Jaws with twin contact points. Item 100-040N. Well designed to work in the shop environment, reinforced stainless steel frame with 3.5" extended jaws and twin contact points make this gauge easy to use and accurate for every measure. X-Large LCD display make it easy on the eyes. Packaged in a protective shop case.