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Details and Image



Item#TypeModelType No.Version No.MakerCountryMaterialScale LengthDateCondition
GIL032Circular
Midget
IV
I
GilsonUSAPrinted Scales on Enamel Coated Aluminum Disc
"12"
c.1931
C4

Notes: "Reverse side of slide rule redesigned with three groups of trig scales: Degrees - 0 - 30, Degrees 30 - 60, and Degrees 60 - 90. Also, celluloid cursor added to reverse side."

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