slide rule
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
slide rule |
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| navigate by keyword : antique background circle close cosine dividing drawing education engineer engineering fashioned formula logarithm macro mathematical mathematics measurement multiplication nobody number object obsolete old paper part pattern plan retro revival round rule ruler scale science scientist sine single slide symbol technology tool trigonometric trigonometry white |
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| A slide rule. Used for mathematical calculations before calculators came out in the mid-1970s |
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Stockphotos.ro (c) 2024. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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