slide rule
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
slide rule |
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| navigate by keyword : antique calculate calculator engineer isolated mathematics number old rule ruler scale science slide sliding white |
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| A slide rule with white background, for mathematical calculations |
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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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