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Keuffel and Esser, Refinery Supply Co. 10" Linear slide rule
Named collection: Keuffel & Esser Company Collection
Object type: slide rule
Maker: Keuffel & Esser Co.
Place made: United States, New York
Materials: wood; metal; celluloid
Measurements: 1/4 in x 10 1/2 in x 1 1/2 in
Thie appears to be a specialized Keuffel & Esser slide rule commisioned by the Refinery Supply Co. of Tulsa Oklahoma. The company is still in business at http://www.refinerysupply.com/. This appears to to be related to pumping fluids. Similar models also manafactured by Pickett (Model 1080, N-1080-ES(1953)), Dietzgen (Copyright 1940), Specialized Scales: Scale A: Coeff. from 1 to 1 to 1, a 2 decade logrithmic scale similar to the traditional A scale. Scale B: Cu. Ft. from 1 to 10 to 100(not labeled), a 2 decade logrithmic scale Scale C: Diff. from 1 to 100, a compressed scale 1 lines up with 7.55 on the B scale and 100 lines up with 75.5 on the B scale. Scael D, Pres. Vac. from 5M to 0 to 28 Serial Number: 377347 Gauge Points: C: Pi, Tick (Pi/4), B: Tick (Pi/4), D: Tick (Aligns 100 on C when A/B are aligned) Cursor: K&E Improved framed, Glass, Single Hairline Slide Reverse: Blank Reverse Label: AC-ME Pocket Calculator, Tulsa, Oklahoma - Houston, Texas, The Refinery Supply Company, Copyright 1940, and a blank table with headings Orifice and COEFF. Patents: Cursor: 2,086,502 Contition: Typical
Keuffel & Esser Company Slide Rule Collection Donated by InteliCoat Technologies