Found in collection. Donor unknown at this time. Found on NASM premises.
Country of Origin: United States of America
3-D Test: 7.6 x 6.4 x 7.6cm (3 x 2 1/2 x 3 in.)
Metal case with no face cover , up and down -Range 0-45 degree Flaps , Has 3 prongs connector on back .