| 释义 |
graphometer|grəˈfɒmɪtə(r)|
Also 8 -metre.
[ad. F. graphomètre (1597 in Hatz.-Darm.), f. as prec. + µέτρον measure.]
A mathematical instrument, used for measuring angles in surveying; otherwise called a semi-circle. † Also, a goniometer used in crystallography.
1696Phillips, Graphometer. 1712J. James tr. Le Blond's Gardening 81 Instruments made use of for tracing upon the Ground..are the Graphometre, or Semicircle, and the Square. 1773Gentl. Mag. XLIII. 457 Making use of the graphometer to take the angles of depression. 1802Nicholson's Jrnl. Nat. Phil. I. 132 Description of the graphometer, or instrument of Cit. Carangeau for measuring the angles of Crystals. 1842in Brande Dict. Sci., etc. Hence in some mod. Dicts. |