Country of Origin: United States of America
3-D Test (Larger Ring): 11.4 x 6.7 x 1cm (4 1/2 x 2 5/8 x 3/8 in.)
3-D Test (Smaller Piece): 8.3 x 1.9cm (3 1/4 x 3/4 in.)
These are wrenches for adjusting casings holding gyroscopes for rockets and were developed by the Reaction Motors Division, Thiokol Chemical Corp.
Found in collection. Donor may be Reaction Motors, Inc., Thiokol Chemical Corp.