Archive of Collections



Details and Image



TypeModel No.MakerCountryConstruction
Material		DateScale LengthArea of Use
Linear
Radiographic Model 534 (v1)
"Technical Operations, Inc"Denmark
Plastic
c. 1954 to 1961length = 18 cmRadiographic Exposure

Notes: 1) Used to predict film exposure times for Iridium on the front side 2) Used to predict exposure times for Cobalt on the reverse side of one of the slides 3) Note - thesingle sided slide rule has 2 slides 4) Made by an unknown company in Denmark for Tech Ops in the USA


Image 1




Image 2




Image 3




Image 4