| 单词 | reducing compass |
| 释义 | > as lemmasreducing compass reducing compass n. now rare = proportional compass n. (b) at proportional n. and adj. Compounds; cf. reduction compass n. at reduction 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 1778 W. Blakey Let. 2 Feb. in Misc. Wks. (1790) ii. 93 This stone was for Madame Pompadour, as well as a fine reducing compass for drawing from large to small. 1872 H. Barnard Mil. Schools & Courses Instr. in Sci. & Art of War 309 Instruments generally employed in military surveying... Instruments for protracting the lines measured, viz.—The step measure, calliper compasses, beam compasses, dividing and reducing compasses. 1906 O. A. Kenyon tr. J. Claudel Handbk. Math. 333 The reducing compass is used for constructing similar figures according to a given proportion. < as lemmas |
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