This is a U.S. Navy Stadimeter, dated 1943, manufactured by Schick Incorporated, Stamford, Connecticut, U.S.A.
Size - 12.5 Inches long and 7 inches wide.
What it is:
A stadimeter is a naval optical range finding instrument. Unlike sextants used for celestial navigation, stadimeters were used to measure the distance to a known object (such as another ship, lighthouse, or landmark) when its actual height was known. This made them crucial for naval operations, especially in convoy navigation, gunnery, and torpedo firing solutions.
