A genuine World War 1 1918 U.S. Engineers Corps military compass made by Cruchon & Emons Berne. The compass is in excellent working order with nice clear glass top, the top hinged protection lid clicks in to place nice and tight, dial locking mechanism works correct by hand or by the closing of the lid, its stamped on the top 'U.S. Engineers Corps' with makers marks stamp on the bottom, under the lid is stamped the serial number: 31410 with the same number stamped on the bottom, the dial is in excellent shape with vivid markings, a very nice and correctly working example.