A Baker Make Digital Caliper is capable of External, Internal, Step and Depth measurement. All three digital calipers are fitted with thumb-roller to improve quality of measurement. Digital Caliper from Clockwise Tools makes precise measurements up to 0.001 inches. The large push buttons on the digital display make converting between metric and standard measurements a breeze. The digital caliper is used to get very accurate measurements of both outside and inside areas of objects. Digital calipers can take highly accurate measurements (to 0.0005 inches) of an objects inside diameter, outside diameter, and depth. The Baker Make Digital Caliper is made for industrial use.