Professional Jewellers Measuring Kit. This Professional Jewellers Measuring Kit contains the most important, useful tools needed in a jewellery maker's workshop. Perfect for beginners, hobbyists and professionals. Accuracy is an important factor in jewellery making, with this kit, from start to finish, you can easily design, prepare and make your jewellery to the precise size and scale. Shop Now and Save 15% Off Professional Jewellers Measuring Kit.