Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 379
1531/. ELLIPSOGRAPH with a penand dividers. A small friction drum ismounted inside of the pen blades, or maybe moimted on the handle upon which athread is wound for adjusting the sizeof the ellipse, and is passed through aneye or hole near the end of the pen bladeand around the legs of a dividers,…
Mechanical movements
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