old brass reduction compass proportional scale divider geometry tool used designs |
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navigate by keyword : reduction compass scale divider proportional brass old antique geometry tool draftmen down upscale downscale divide line circle plane solid square designer chart navigation distance time speed engineer artist drawing pattern convert solve wood closeup adventure ancient device sea travel sail latitude instrument precision exploration map measure vintage |
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Brass reduction compass or proportional scale divider. Geometry tool used to scale up or down designs and in navigation to transfer distance on charts |
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