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(21 - 27 of 27)

Title: Triode, high frequency (door knob), WE 316A
Format: photograph: negative
Description: Used mainly in GE IFF radio in 1943. Mfg. Western Electric.

Title: Radar switch tube
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.

Title: Wrico lettering set
Format: photograph: print
Description: Used for drafting. Housed in wooden box.

Title: Wrico lettering set
Format: photograph: print
Description: Used for drafting. Housed in wooden box.

Title: Polaroid Projector Polariscope No. 438
Format: photograph: print
Description: Used for analyzing polarity of objects.

Title: Spectrophotometer, quartz, Model DU
Format: photograph: negative
Description: Serial no. 29649. With phototube housing and lamp housing directly attached. Connected by cord to power supply; cord is frayed. Mfg. National Technical Laboratories.

Title: Wrico lettering set
Format: photograph: print
Description: Small lettering set used for drafting. Housed in wooden box.