Calipers are invaluable in the studio and we use ours daily. These are used for measuring the thickness of just about anything including metal and wax.
Use the sharp pointed jaws for scribing a line on your metal. The round thumb wheel allows you to easily open and close the calipers.
These are so handy for checking:
These calipers are also included in the Premium Jewellery Tool Starter Kit, the Ultimate Lost Wax Jewellery Tool Kit the Lost Wax Jewellery Tool Starter Kit and the High Quality Economy Jewellery Tool Kit.