Columbus Vernier Caliper is an economical quality gauge as it measures in both metric and inch units. It has a maximum capacity of 5 inches or 125 mm. The Vernier scale reads to 1/16 and 1/10 cm. Columbus Vernier Caliper has been specified to meet the external and internal measurement requirements of up to 2000 mm with an accuracy of 0.02, 0.05 and 0.1 mm. The different types of Vernier callipers are classified as type A, type B, and type C.