old logarithmic ruler for arithmetic calculations isolated
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
old logarithmic ruler for arithmetic calculations isolated |
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| navigate by keyword : abacus account ancient arithmetic calculation calculations calculator isolated logarithmic ruler vintage |
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| Old logarithmic ruler for arithmetic calculations isolated on a white background. Made in USSR. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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