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A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 150
n a scale of not less than three chains to theinch. Ex. 1. To draw the map and calculate from the follow-ing field-notes the area of the pentagonal field ABODE:— OD 0 C © c 3 690 *<§ 770 <6 915 aofcu 570 510 C a ofcfi 510 250 B | 585 Brook. a E. 350 280 e3 s 360 Brook. ^ 365 AD ©A N.15°E. ©A… … = 39.295 ch. = 3 A., 3 R., 28.72 P. Ex. 2. Map the plat, and calculatethe content from the following field-notes :— Fig. 109.Surveying
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