New Lapidary Template. This is a new lapidary template. It is used for calibrating stones into shapes that will fit in standard settings. This gauge gives you all of the most popular sizes and makes it easy to draw an exact size without guessing. Has a 0 - 10 centimeter scale on the bottom. Sizes on gauge: 10 x 8, 11 x 9, 12 x 10, 14 x 10, 14 x 12, 16 x 12, 18 x 13, 20 x 15, 40 x 30, 30 x 22, 25 x 18, 24 x 14, 20 x 12, 16 x 8, 16 x 9, 18 x 9, 22 x 8, 24 x 10, 24 x 10, 7, 8, 9, 10, 12, 14, 16, Dime:18, Dollar: 38, Half Dollar: 30.5, Quarter: 24.2, Nickel: 21, Penny: 19. All sizes are in millimeters.