Archive of Collections

Details and Image

R. Lewis / Oldham St. Manchester
R. LewisEnglandIvory and Brass6 inc. 1850

Notes: "This sector was part of an antique drafting set. Typical sector scales: Scale of Decimals on the outer edge, Scale of Inches on the front face, & Lines of Artificial Numbers (N,S,T) on the rear face."

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