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Details and Image
Item#
Type
Model
Type No.
Version No.
Maker
Country
Material
Scale Length
Date
Condition
LAW014
Linear
10-G
Cutting Speed Calculator
1
Lawrence
USA
Boxwood w/white painted surface and printed scales
"10"
©1946
C5
Notes:
"Slide rule for calculating cutting speed in f.p.m for given drill diameter in inches millimeters, or drill size and spindle speed in r.p.m."
Click on the
Condition Code
to obtain more details.
