The theory and practice of surveying. Designed for the use of surveyors and engineers generally, but especially for the use of students in engineering (1886)
Johnson, J. B. (John Butler), 1850-1902 · New York, J. Wiley & sons · leaf 268
ould be some even hundreds of feet, as 600. TOPOGRAPHICAL SUR VE YING. 239 In Fig. 63 are shown four designs for stadia-rods whichhave been long in use, and are found to work well. They areintended to be all in black on a white ground.* It will benoticed that the shortest lines in these diagrams… … Fig. 63. successive units are found at the middles and limits of theselines and spaces. Wherever the wire falls, there should be awhite ground on some part of the cross-section ; and the morewhite ground the better, provided the figures are distinct.The black paint may be put on heavy, so that one…
Surveying
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