Title: Radar switch tube
Date: 1940 (approximate)
Original Format: photograph: negative
Description: Russian copy of Western Electric Mark II 5D21, anti-submarine radar switch tube by H. E. Mendenhall (CIT 1927), J. Westsan and C.H. Elmendorf (CIT 1936). Found on Oregon beach ca. 1948.
Collection: Scientific Instruments
Caltech Archives ID: ST-ME-03
