This is an authentic WW2 Nazi Germany military bullseye spirit level (referred to as a Dosenlibelle) utilized during World War 2. This specific style of circular bubble level w/three mounting holes and a flip-top lid was designed for military hardware. It was prominently mounted onto specialized field equipment, most notably the Flak 38 anti-aircraft gun platform, to ensure the weapon was perfectly leveled during setup. These were standard-issue gear for field glasses, targeting optics, or signaling equipment. Markings: ** "G" Stamp - the distinct stamped "G" on the outer rim is a factory production code or inspector mark commonly found on these units. ** Lid Underside Stamp - This is the German military proof mark (Waffenamt) which depicts the stylized eagle holding a swastika emblem, which was the military acceptance stamp utilized by the German armed forces between 1935 and 1945. Beneath the eagle, the text reads WaA120 (or a variation of that number) where "WaA" stands for Waffenamt (Army Ordnance Office). These inspection codes indicate which inspector or factory manufactured and approved the piece of equipment for military service. ** "FES" Underside - "FES" stamped inside a raised triangle border is the hallmark (Manufacturer) & stands for the metalworking company or foundry that manufactured the hardware components (such as lids, thumb lifts, and hinges). The heavy metal casing with a hinged protective lid, shielded the glass vial and fluid from dirt, shrapnel, and harsh weather conditions in the field. Measurements (approximate): Diameter - 3"
