A Vernier Caliper is designed to give the most accurate possible reading for the width or diameter for an object. The design of the caliper allows outer dimensions to be measured via the outer jaws, which are the largest on the caliper, and the inner dimensions of an object, for example a tube, can be measured using the inside jaws, which are the smallest on the caliper. The ToolPRO Digital Vernier Caliper has the capacity to measure objects which are up to 150mm in width or diameter. Where most Calipers provide a manual measurement, this Caliper provides an easy to read digital display which is accurate up to 0.03mm. This Caliper can be used in a variety of applications and can comfortably operate in temperatures of 0 to 40 degrees Celsius.