Professional digital caliper for commercial or occasional use Digital caliper Suitable for both internal and external sizes Features a large LCD screen for ease of use Carbon fibre construction so lightweight to use but still strong enough to last Also can measure hole / thread depth with the built in depth stop Simple way to make accurate measurements of internal and external distances up to 150mm Includes depth measuring tool Can display in both metric and imperial measurements Measuring range 0 - 150mm Accuracy plus or minimum 0.02mm over a 100mm range and 0.03mm above this Accuracy is also affected in areas of very high humidity Battery powered (comes with the kit) Comes in a blow molded case for easy storage and transportation