| 单词 | spring bow dividers |
| 释义 | > as lemmasspring bow dividers 3. A compass in which the legs are joined by a flexible bow-shaped bar or plate rather than a hinge. Cf. bow-compass n. 1. More fully spring bow dividers. ΘΚΠ society > communication > representation > a plastic or graphic representation > graphic representation > drawing plans or diagrams > [noun] > drawing instruments > for circles compassa1387 shank1587 beam-compass1785 bow-compass1796 bow-pen1869 pencil arm1884 spring bow1998 1847 Price List (E. M. Clarke) 1 in F. W. Simms Treat. Principal Math. Drawing Instruments (ed. 3) Spring-bow Dividers, ditto Pen, ditto Pencil, with screw motion, the screw moving in a slot. 1895 Army & Navy Co-op. Soc. Price List 686 Spring Bows, set of three, Ink, Pencil, and Divider, in case. 1964 G. Baker Scale Drawing 31 Spring-bows do not have knee-joints because the angle of working is so small as not to matter. 1998 G. L'E. Turner Sci. Instruments 81/2 A typical set of drawing instruments includes..spring bows for small circles. 2010 N. Swager Secrets of Speed 109/3 Use a pair of spring bow dividers to measure the clearance between the valve head and the relief. < as lemmas |
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