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单词 plane table
释义

plane tablen.

Brit. /ˈpleɪn ˌteɪbl/, U.S. /ˈpleɪn ˌteɪb(ə)l/
Origin: A variant or alteration of another lexical item. Etymon: plain table n.
Etymology: Alteration of plain table n., after plane adj.
Surveying.
A portable instrument consisting essentially of a board or small table that has an alidade or sighting rule on it and can be levelled and can hold a sheet of paper in a fixed position, which together with a means for plotting distances is used for drawing a map while in the field.The typical form has a socket underneath into which an adjustable tripod is fixed.
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the world > the earth > earth sciences > geography > map-making > surveying > [noun] > surveying instruments > for measuring angles
theodolite?a1560
topographical instrument?a1560
plain table1607
circumferentor1610
diopter1613
plane table1670
circumferencera1687
graphometer1696
semicircle1701
transit theodolite1824
dioptric1849
planchette1858
theodolite-goniometer1909
gyro-theodolite1950
1670 S. Gott Divine Hist. Genesis World xi. 390 The Natural way of Vision is Hemispherical,..as if we lay our Ey on a long Plane table; or standing on the Shore, behold the Sea.
1716 E. Laurence Young Surveyor's Guide App. 191 (heading) How to take the Ground-plot of any City or Corporation by the Theodolite or Degrees on the plane Table.
1728 R. Morris Ess. Anc. Archit. Advt. Plane-Tables, Water-Levels, Measuring-Wheels.
1845 Biblical Repertory Apr. 339 Plane-table surveys were made on the shore of the Chesapeake, and the adjacent country..and hydrographical surveys were made.
1871 R. A. Proctor Light Sci. 274 The plane-table is a flat board turning on a vertical pivot.
1949 T. W. Birch Maps vi. 48 The plane-table..may be used to survey as extensive an area as the prismatic compass, and the resultant work is far more accurate.
1998 J. L. Heilbron Geom. Civilized iii. 126 In the field, surveyors do not use hand-made quadrants but nicely graduated scales and telescopic sights. For many purposes, the plane table used by the French army engineers shown at work in Fig. 3.3.47 is quite satisfactory.
This entry has been updated (OED Third Edition, June 2006; most recently modified version published online March 2022).
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n.1670
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