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Details and Image
Item#
Type
Model
Type No.
Version No.
Maker
Country
Material
Scale Length
Date
Condition
GIL032
Circular
Midget
IV
I
Gilson
USA
Printed 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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Condition Code
to obtain more details.
