Mechanical movements, powers, devices and appliances; (1903)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N.W. Henley & co. · leaf 377
531a. ELLIPSO-GRAPHIC T U R N -TABLE. — The tablesits upon a trammelframe, which moves abar with gimbal yokeand sliding rod to carrythe pen or pencil. IMakes an ellipse froma circle to a straightline. 1531&. ELLIPSOGRAPH.—A pairof dividers with points perforated likethe eye of a needle allows… … 1531a. OMXI-TELE^[ETER.—For obtaining the distance of an ob-ject by two observations on a line atright angles. A, direct line ofsight through the half silvered mir-ror D ; X, reflected line of sight at90° or variable by the mirrors D, F.The lever L varies the angle of themirror, F, by means of the…
Mechanical movements
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