A complete treatise on practical land-surveying, in seven parts; . Diag. m, proof-line, goes to D,and measures 285. Part IV.) LAND-SURVEYING 143 Begin at AC 1200 1000 R. off A. E A 393R. off E. DE 692R, off D. CD 620R. off C. BC 535R, off B. AB 1334 1000 A. Range Diag. Having constructed the figure, you will find the perpen-diculars C a = 410, Aa = 330, and D a = 215 links. 144 Trapezium A B C E. 410) 330}Per- 740 sum. 1510 diag. LAND-SURVEYING. (Part IV. Triangle C D E. 1238 per. 61901238 7400 2476 370 74 1117400 266170 1117400 ) Double areas266170 J )1383570 4
A complete treatise on practical land-surveying, in seven parts; . Diag. m, proof-line, goes to D,and measures 285. Part IV.) LAND-SURVEYING 143 Begin at AC 1200 1000 R. off A. E A 393R. off E. DE 692R, off D. CD 620R. off C. BC 535R, off B. AB 1334 1000 A. Range Diag. Having constructed the figure, you will find the perpen-diculars C a = 410, Aa = 330, and D a = 215 links. 144 Trapezium A B C E. 410) 330}Per- 740 sum. 1510 diag. LAND-SURVEYING. (Part IV. Triangle C D E. 1238 per. 61901238 7400 2476 370 74 1117400 266170 1117400 ) Double areas266170 J )1383570 4 Area 6a. 3r. 27p. 2. It is required to find the area of a field from the follow-ing notes, DA 1042Return to D. CE 420R. off C. A C 768Roff A. E A 585R. off E. DE 518R. offD. CD 365L. off C. Diag, Diag. Diag. Part IV.) LAND-SURVEYING. 145 Begin at
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