Stainless steel vernier caliper is a 4 way measuring tool used to accurately measure the internal and external dimensions, height or step measurements of objects with high precision. Vernier scale for more precise measurements compared to a standard ruler or tape measure. Vernier scale provides incremental measurements in addition to the main scale, enabling resolution down to 0.05mm. Top jaws for internal and bottom jaws (50mm) for external measurements. Depth gauge or rod to measure the depth of holes, slots or other recessed features accurately. Locking screw for locking caliper jaws, preventing any movement during reading. Ideal for engineering, machining, metalworking, woodworking, quality control, dimensional analysis and scientific research.