Measuring Caliper, 6" Dial Caliper - .001" Increments, 6" Dial Caliper - .001" Increments, None, Dial calipers are a must-have for any hotrodder. These analog dial calipers measure up to 6" in .001" increments and feature smooth thumb rollers, a protective case and a rigid stainless steel body., Multi-Purpose Measuring Caliper