[f. prec. sb.]
1. trans. To mark or furnish with contour lines. 2. To carry (a road, etc.) round the contour of a hill. Hence Contouring vbl. sb.; also attrib.
1871. Proctor, Light Sc., 280. In true contouring regular horizontal lines … are traced over a country.
1879. C. C. King in Cassell’s Techn. Educ., IV. 92/2. For contouring it is simply necessary to keep the plummet vertical through the zero point.
1890. Hallett, 1000 Miles, 431. The cart-road to Maymyo, a place 24 miles to the east of Mandalay, has had to be contoured to 44 miles, and ascends in this distance 3300 feet.
1890. Catalogue of Scientif. Instrum., Contouring Glass or Hand Level for direct vision.
