| 释义 |
▪ I. ˈplane-ˌtable, n.
Also 7–9 plain-table.
[f. plane a. + table n.]
A surveying instrument used for measuring angles in mapping, consisting of a circular drawing-table mounted horizontally on a tripod, and having an alidade pivoted over its centre.
1607Norden Surv. Dial. iii. 127 Two principall instruments, fit..for the plotting of grounds,..a plaine table, and the Theodolite which sometimes I use. 1766Complete Farmer s.v. Surveying. To explain, in a very easy and concise manner, the use of the plain table. 1828Hutton Course Math. II. 76 In surveying with the plain table, a field-book is not used. 1871Proctor Light Sc. 274 The plane-table is a flat board turning on a vertical pivot.
▪ II. ˈplane-ˌtable, v.
[f. prec. n.]
trans. To survey with the plane-table. Also intr., to work with a plane-table.
1883H. H. Godwin-Austen et al. Hints to Travellers (ed. 5) i. 109 There is no measuring, no counting of paces or noting of time by a watch, no anxiety about the record, when Plane-Tabling. 1886Athenæum 3 July 21/2 Major Holdich with his assistants, Capts. Gore and Talbot, have plane-tabled an extent of 15,000 square miles.
Hence ˈplane-ˌtabler, a surveyor using a plane-table; ˈplane-ˌtabling, the employment of a plane-table; surveying by means of the plane-table.
1871Proctor Light Sc. 274 The principle of plane-tabling enters so largely into Indian surveying, that our notice would be incomplete without a brief account of this simple and beautiful method. 1888Min. Proc. Inst. Civil Engin. XCII. 190 When a triangulation exists of the country to be mapped, the plane-tabler makes immediate use of these established points. 1923D. Clark Plane & Geodetic Surveying II. vi. 238 Plane tabling is the most extensively used method for the survey of topography. 1950J. Clendinning Princ. & Use of Surveying Instruments vii. 166 Plane-tabling is a graphical method of survey in which the map is rough-drawn in the field as the survey proceeds. 1965Textbk. Topogr. Surveying (Min. of Defence) (ed. 4) xi. 205 The trigonometrical framework will have been surveyed... The plane tabler then proceeds to break down from this framework using methods similar to those employed by the triangulator. 1971R. J. P. Wilson Land Surveying viii. 164 In the past plane tabling was the method used for supplying topographical detail for maps at scales of 1:10 000 to 1:250 000, but its use in this respect has largely..been superseded by air survey. |