https://www.crazycrow.com/horn-items/mini-powder-horn-compass
Mini Powder Horn Compass
4940-004-001$19.95


Product Details
Perfect for mounting in the butt of a powder horn or in a small, turned wooden or horn box, these small compasses are made of solid brass with an authentic, early period printed face. Keep one in your possibles bag or on your horn, and you'll always be able to find true north! It measures a handy 1-3/8" in diameter by 7/16" deep and weighs approximately 1/2 ounce. Wooden box is not included.