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Details and Image
Item#
Type
Model
Type No.
Version No.
Maker
Country
Material
Scale Length
Date
Condition
GIL023
Circular
Binary
I
I
Gilson
USA
Printed Scales on Enamel Coated Aluminum Disc
"25"
c.1942
C6
Notes:
"First version of Binary slide rule model. Has COPYRIGHTED 1931 and GILSON SLIDE RULE CO. STUART, FLA. on back of slide rule. Two celluloid cursors on front and one on back."
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Condition Code
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