Click the link to print your own Coin Diameter Gauge.
This file is in PDF format. Printing a PDF may require Adobe Reader.
A millimeter scale is provided on the page so that you can verify that the gauge has printed at the correct size; simply compare the scale with a ruler to ensure correct printing. If you experience difficulties printing the gauge at the correct size, be sure that the "fit to page" option in the Adobe print dialog box is NOT selected.