> as lemmas

1918 in Geogr. Jrnl. (1919) 53 33 Doubtless the German was amused at the conservative Briton, who at first preferred to use a ‘grid’ of squares 1000 yards a side.

1922 Encycl. Brit. XXXII. 623/1 For the use of large scale maps in trench warfare..it must be possible to read off at sight the coördinates of any desired point from a ‘grid’ or network of lines printed on the map... For ease and accuracy of reference the ‘grid’ should be in squares.

1924 Times Trade & Engin. Suppl. 29 Nov. 241 Simplicity of reference is ensured by the use of a novel transparent grid sheet, ruled in squares and numbered to correspond with the grid numbers given in the Gazetteer. The use of this grid sheet enables the most obscure place to be found on the map in a moment.

1925 C. F. Close & H. St. J. L. Winterbotham Text Bk. Topogr. & Geogr. Surv. (ed. 3) 135 Some form of reference grid was found necessary by all combatants in the late war.

1925 C. F. Close & H. St. J. L. Winterbotham Text Bk. Topogr. & Geogr. Surv. (ed. 3) 136 To overprint his available maps with the appropriate grid.

1930 G. R. de Beer Embryol. & Evol. iv. 29 The comparison of one adult form with another can be made very instructive by inscribing the shape of one form on a grid-system of Cartesian co-ordinates.

1930 G. R. de Beer Embryol. & Evol. iv. 30 By a harmonious transformation of the grid, the skull of Hyracotherium can be distorted and made to resemble that of the horse.

1931 Times Lit. Suppl. 10 Sept. 674/4 This grid, which has the appearance of a transparent chessboard, can be made to appear at the same height as any object in the stereoscope picture.

1932 Jrnl. Royal Aeronaut. Soc. 36 518 This template, often known as the grid finder, is placed on the photograph so that the line representing the apparent horizon coincides with the apparent horizon on the photograph.

1944 Geogr. Rev. 34 436 (title) Grid Navigation by Samuel Herrick.

1944 Geogr. Rev. 34 436 The introduction of a rectangular grid system and what is hereafter described as ‘grid variation’ makes it possible to navigate a straight line on any conformal..chart.

1946 R. J. C. Atkinson Field Archaeol. ii. 46 The interrupted grid system..enables a much larger area to be searched in a given time.

1954 M. Beresford Lost Villages Eng. viii. 270 Grid-references to the 1-inch Ordnance maps.

1958 Listener 13 Nov. 779/1 The first [major development in polar navigation] is the substitution of a rectangular ‘grid’ for the conventional graticule of parallels of latitude and meridians of longitude which converge at the Poles. This simple technique, which has been extensively developed since the war, is generally called ‘grid navigation’.

1963 E. S. Wood Collins Field Guide Archaeol. iv. i. 306 A card index should be kept; one card for each find or site, showing details,..location, with grid reference.

1966 H. Williamson Methods Bk. Design (ed. 2) xiii. 211 The photographer places in the camera..a glass screen ruled with a rectangular grid of fine diagonal lines.

1971 D. Potter Brit. Elizabethan Stamps xiv. 148 This tissue is first exposed behind a fine grid of horizontal and vertical lines.