单词 | gunter's scale |
释义 | > as lemmasGunter's scale a. In the name of several mathematical instruments improved or invented by Gunter. Gunter's chain: the chain of 4 poles' length now in general use for land-surveying (see chain n. 9). Gunter's line: a logarithmic line on Gunter's scale used for performing mechanically the operations of multiplication and division; also called Gunter's proportion. Gunter's quadrant: an apparatus for finding the hour of the day, the azimuth, etc. Gunter's rule, Gunter's scale = 1b. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > chain chain1610 Gunter's chain1679 pole chain1725 the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > rule Gunter's rule1679 Gunter's scale1679 Gunter1706 the world > the universe > cosmology > science of observation > astronomical instruments > measuring altitude > [noun] > quadrant or sextant > quadrant > types of back-staff1627 sinical quadrant1669 Gunter's quadrant1679 meridian quadrant1793 1679 J. Moxon Math. made Easie 61 Gunter's Chain, Quadrant, Rule, Scale, and Sector, all useful Mathematical Instruments, invented or much improved by..Mr. Edmund Gunter..and from him bearing their names. 1688 J. Brown (title) The description and vse of the carpenters-rule: together with the vse of the line of numbers commonly called Gunters-line. Applyed to the measuring of all superficies and solids. 1701 T. Tuttell Descr. Math. Instruments in J. Moxon Math. made Easie 9 Gunter's Quadrant,..made in Wood or Brass, Curiously contrived to find the Hour..and Azimuth, and most Propositions of the Globe; also, the Height of Trees, Steeples, &c. 1706 Phillips's New World of Words (new ed.) Gunter's Line, the common Line of Numbers first invented by Mr. Edmund Gunter, and so well known that it needs no Description. 1728 E. Chambers Cycl. Gunter's Line, call'd also Line of Lines, and Line of Numbers, is a graduated Line usually placed on Scales, Rules, Sectors, &c. 1749 B. Franklin Let. 29 July in Exper. Electricity (1751) 66 Two pieces of thick looking-glass, as broad as a Gunter's scale, and 6 inches long. 1798 C. Hutton Course Math. II. 50 Land is measured with a chain, called Gunter's Chain..of 100 equal links; and the length of each link is therefore..7·92 inches. 1890 Dict. National Biogr. XXXIII. 350 Gunter's admirable rule of proportion, now called the line of numbers (‘Gunter's Line’ and ‘Gunter's Proportion’), and other lines laid down by it were fitted in the scale, which ever since has been called ‘Gunter's Scale’. Gunter's scale b. Short for Gunter's scale: A flat rule, two feet long, marked on one side with scales of equal parts, of chords, sines, tangents, etc., and on the other side with scales of the logarithms of those parts; much used for the mechanical solution of problems in surveying and navigation. ΘΚΠ the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > rule Gunter's rule1679 Gunter's scale1679 Gunter1706 1706 Phillips's New World of Words (new ed.) Gunter's-Scale, commonly call'd The Gunter by Seamen. 1728 E. Chambers Cycl. Gunter's-Scale, called also by Navigators absolutely the Gunter is a large Plain Scale, with divers Lines thereon... The same Lines are also occasionally laid down on Rulers to slide by each other; hence called Sliding-Gunters. 1886 Dict. National Biogr. VI. 225/2 Brandreth, T. S...had previously [to 1821] invented his logometer, or ten-foot gunter. 1890 Dict. National Biogr. XXXIII. 350 In these tables [sc. of Artificial Sines and Tangents] Gunter applied to navigation and other branches of mathematics his admirable rule ‘the Gunter’, on which were inscribed the logarithmic lines for numbers, sines, and tangents of arches. Gunter's scale diagonal scale, Gunter's scale, Marquois scale: see the qualifying words. plane (†plain) scale: see plane adj. Compounds 1.extracted from scalen.3< as lemmas |
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