Author: HALDEN - DRAWING OFFICE SPECIALISTS
Title: Catalogue "E" - Scales, Slide Rules, Etc.
Description: Manchester, J. Halden & Company Limited. 210mm x 257mm tall (8.25" x 10" approx.) Brown & blue-printed/sepia photo-illustrated general title-leaf + colour-printed frontis. leaf of a dozen or so types of slide-rules + 32 catalogue pages [printed in blue & brown] with 132 illustrations. A very good copy, in the original black-printed, soft grey card covers. Undated, but circa 1950/60's?.

Keywords: Slide Rule Rules Math Maths Mathematics Instruments Technology Science Calculators Calculation Scales Reciprocals Sine Cosign Tangent Scientific Cursor Cursors Log Logs Reitz Pic Geometry Protractor Protractors Ruler Rulers Squares Sliderule Sliderules Sl


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