Archive of Collections



Details and Image



Item#TypeModelType No.Version No.MakerCountryMaterialScale LengthDateCondition
LAW017Linear
6-Op
Flashrule
LawrenceUSABoxwood w/white painted surface and printed scales
"6"
©1946
C5

Notes: Slide rule for selecting correct lens aperture per type of GE or Westinghouse flashbulbs.

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