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Item#TypeModelType No.Version No.MakerCountryMaterialScale LengthDateCondition
LAW014Linear
10-G
Cutting Speed Calculator
1
LawrenceUSABoxwood 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."

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