File:Vintage Keuffel & Esser Company Beginner's Slide Rule, No. 4058C, All Wood Framed Cursor, Made In USA, Circa 1930s (46171984654).jpg
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| Description |
English: Keuffel & Esser "Beginner's Slide Rule", model 4058C, wood-framed cursor, made in USA, circa 1930s. This is a low-cost slide rule intended for students and other beginners, with its scales printed directly on wood rather than engraved into celluloid facing. It is a basic "Mannheim-type" slide rule, with two single-decade (1-to-10) scales C and D for ordinary multiplication and division, and two two-decade (1-to-100) scales A and B for calculations involving squares and square roots. (The slide, which is removable and reversible, also has sine, tangent, and logarithm scales on its back side, here hidden.) |
| Date | |
| Source | Vintage Keuffel & Esser Company Beginner's Slide Rule, No. 4058C, All Wood Framed Cursor, Made In USA, Circa 1930s |
| Author | Joe Haupt from USA |
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This image, originally posted to Flickr, was reviewed on 29 December 2023 by the administrator or reviewer Matrix, who confirmed that it was available on Flickr under the stated license on that date. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 06:23, 6 May 2021 | | 3,772 × 2,130 (2.82 MB) | Colin Douglas Howell (talk | contribs) | {{Information | Description = {{en|Keuffel & Esser "Beginner's Slide Rule", model 4058C, wood-framed cursor, made in USA, circa 1930s. This is a low-cost slide rule intended for students and other beginners, with its scales printed directly on wood rather than engraved into celluloid facing. It is a basic "Mannheim-type" slide rule, with two single-decade (1-to-10) scales C and D for ordinary multiplication and division, and two two-decade (1-to-100) scales A and B for calculations involving... |
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