| 单词 | reduction compass |
| 释义 | > as lemmasreduction compass reduction compass n. = proportional compass n. (b) at proportional n. and adj. Compounds; also in plural in same sense; cf. reducing compass n. at reducing n. Compounds 2. ΘΚΠ society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > drawing instruments > for enlarging or reducing parallelogramc1656 pantograph1723 pantographer1750 reducing compass1778 tracer1812 eidograph1828 reducing machine1848 reduction compass1853 planigraph1877 tracing-instrument1877 1755 New & Compl. Dict. Arts & Sci. IV. 2682/2 The great use of the proportional compasses is the reduction of figures, &c. whence they are called compasses of reduction.] 1853 Official Catal. N.-Y. Exhib. Industry All Nations 160 A case of mathematical instruments in silver, ditto in brass; a reduction compass with micrometer. a1877 E. H. Knight Pract. Dict. Mech. II. 1903/1 Reduction-compasses, proportional dividers or whole-and-half dividers. 1968 Physis 10 307 The reduction compass was soon superseded by the proportional compass. 2005 W. Schäffner in H. Schramm et al. Collection, Laboratory, Theater 63 (caption) Jost Bürgi's Reduction Compass from Levinus Hulsius. < as lemmas |
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