Geodaesia : or, The art of surveying and measuring land made easy (1768)
Love, John, fl. 1688, Clark, Samuel · London : Printed for J. Rivington · leaf 277
an:le by loofing thechain at D, and putting it over theflick at E, Jetting the line remain as itwas fattened at A, and taking the loofeends again of the chain and line in yourhands, go backwards as before, tillboth being flretched flrait, meet in F.So have you formed two equilateraltriangles, and… … An APPENDIX, See. 3 50 degrees, which added to 120, make 170 degrees,the quantity of the angle fought •, or if you have not amind to ufe the table, you may note it down in yourfield-book, thus, A A 847, fignifying that angle con-fifts of 120 degrees and 84--links for its fiibtending line ;and you…
Surveying
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![An illustration from Cosmographia Francisci Mavrolyci Messanensis Sicvli : in tres dialogos distincta, in quibus de forma, situ numerʹoq[ue] tam coelorum q[uam] elementorum, alijsq[ue] rebus ad astronomica rudimenta spectantibus satis disseritur (1543)](https://img.insideoutlibrary.com/img/200/ia-cosmographiafran00maur-157-0.webp)
