INDESTRO SOCKET SET INV0030

This is the Indestro No. 350 1/4-Drive Socket Set in a green metal case, stamped with the patent number on the back. The hex socket sizes are, from the left, 1/4, 5/16, 11/32, 3/8, and 7/16. The overall length is 4.3 inches. The handle and sockets are finished with cadmium plating. The square socket size is 1/4. The patent notation here correctly refers to patent #2,065,340, filed by McNaught and Peterson in late 1935 and issued in 1936. The patent marking indicates production in 1937 or later.