20"/500mm capacity x .001"/0.02mm Long Jaw style Vernier Caliper Long Jaw Vernier Caliper Long jaws for measuring hard to reach workpiece features The jaws have rounded measuring faces for accurate inside diameter measurement Inside and outside measurements can be read directly from the upper and lower vernier scales
20"/500mm capacity x .001"/0.02mm Long Jaw style Vernier Caliper, Standard Model, Plain basic design