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(21 - 23 of 23)
Polaroid Projector Polariscope No. 438
Title
Polaroid Projector Polariscope No. 438
Format
photograph: print
Description
Used for analyzing polarity of objects.
Spectrophotometer, quartz, Model DU
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.
Wrico lettering set
Title
Wrico lettering set
Format
photograph: print
Description
Small lettering set used for drafting. Housed in wooden box.