 ... quarter of an inch in depth at several times, allowing sufficient intervals for the fluid to stain the stone in that plane, 4, 3, 2, 1, it has fallen to at the last abstraction. These stains will present a series of horizontal lines or contours, 4,...  Instructions in Practical Surveying, Topographical Plan-drawing, and ... - Page 76by George D. Burr - 1847 - 223 pagesFull view - About this book
 | William Schofield Binns - 1861 - 238 pages
...around : bed it in clay placed in the bottom of the box, through which there should be a small hole and plug ; fill the box with water stained with Indian...obtain a sort of scale of the relative steepness." * Since an irregular surface can only be represented by light and shade, or by the plan of its contours,... | |
 | Auguste Frédéric Lendy - Military topography - 1864 - 254 pages
...series of horizontal lines or contours, 4, 3, 2, 1, all round the surface of the stone ; and if we examine the stone thus prepared, looking down upon the top, we shall see that the steepness and REPRESENTATION OF THE GROUND. the flexures of its sides will be accurately marked by these contours,... | |
 | Auguste Frédéric Lendy - 1869 - 284 pages
...series of horizontal lines or contours, 4, 3, 2, 1, all round the surface of the stone ; and if we examine the stone thus prepared, looking down upon the top, we shall see that the steepness REPRESENTATION OF THE GROUND. and the flexures of its sides will be accurately marked by these contours,... | |
 | Spon E. & F.N., ltd - 1874 - 464 pages
...lines or contours, 4, 3, 2, 1, all round the surface of the stone, as shown in Fig. 71 3J ; and if we examine the stone thus prepared, looking down upon the top, we shall sec that the steepness and the flexures of its sMe.s will be accurately marked by these contours, which... | |
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