Written on solder on the solder side of the circuit board
Written on a sticker attached to the frame
overall: 1 1/4 in x 3 3/4 in x 7 1/2 in
The object consists of a metal frame containing two vacuum tubes and a printed circuit board with resistors. A note from KJK 6/4/15 (which was found with the object), indicates that it could be a Bendix G15 or G20.