Vt German Md Chrome & Glass Opisometer w Original Leather Case 🐞

Vintage German made chrome and glass opisometer/map measure/curimeter with the original leather case/sheath. Circa 1940’s. Stamped Germany. A collectible piece. Features a small wheel that is rolled along a curved or straight line on a map, which in turn moves a needle on the dial to indicate the distance. Measures inches to miles/nautical miles. Reverse side is a compass. Very good condition. No chips or cracks. No issues. Any wear commensurates with the age. Approximately 1.5” wide and 3” tall.