A treatise on surveying, comprising the theory and the practice ; (1887)
Gillespie, W. M. (William Mitchell), 1816-1868, Staley, Cady, 1840- [from old catalog] ed · New York, D. Appleton and company · leaf 36
equaland its sides proportional. Every inch on it represents a foot, ayard, a rod, a mile, or some other length, on the ground ; all themeasured distances being diminished 7 in exactly the same ratio. Platting is repeating on paper,to a smaller scale, the measurementswhich have been made on the… … 22 LAND-SURYEYING. and describing an arc of a circle with a radius whose length is alsogiven. The only instruments absolutely necessary for this are astraight ruler and a pair of dividers or compasses. Others,however, are often convenient, and will be now briefly noticed. 37. Straight Lines. These…
Surveying
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