CALIPER
A digital caliper is a precision measuring instrument used to accurately measure lengths, diameters, depths, and thicknesses. It features an electronic display that shows measurements clearly in millimeters and inches, making it easier and faster to read than traditional calipers. Digital calipers are commonly used in science labs, engineering, machining, woodworking, electronics, and school projects because they provide high accuracy (often up to 0.01 mm) and are easy to operate.