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Details and Image
Type | Model No. | Maker | Country | Construction Material | Date | Scale Length | Area of Use |
Linear | Keuffel & Esser 4081-5 | Keuffel & Esser | USA | Celluloid on Mahogany | about 1958 | 50 cm | Engineering |
Notes: "Serial number 510083. With both wood and celluloid visible on edge, simply a beautiful slide rule."
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