German WWI Reich Marine Torpedo Sighting Gauge, In Original Wooden Box

A fine 8-inch brass calibrated torpedo sighting gauge complete with its sighting arm, the arm blackened and marked ‘F.N.4637’ on the swivel. The underside of the raised sight is maker marked ‘Nautische Werkstätten GMBH Kiel’. Housed in its original wooden case measuring 8.5 x 8.5 inches, the exterior impressed with ‘M 1918’.

Ref; 95299 XAB