Country of Origin: United States of America
3-D Test: 27.3 x 13.7 x 10.2cm (10 3/4 x 5 3/8 x 4 in.)
This is probably an unflown fragment of the optical system used on the Apollo Command Module to assist the astronauts in navigation from Earth to the Moon and back. However, this has not been verified. No other information is known.
Found in collection. Donor unknown at this time. Found on NASM premises.