Geodaesia : or, The art of surveying and measuring land made easy (1768)
Love, John, fl. 1688, Clark, Samuel · London : Printed for J. Rivington · leaf 278
of 50links, go backwards till both parts are ftrait, and thereftick down a ftick -, as at F. Then loofe the ring fromD, and put it over the ftick at F, and taking the verymiddle of the chain, make both parts ftrait, which theywill be at C, where ftick down a ftick, from which mea-fure to E, noting… … that being made to the radius of 100 links, unlefs youdouble the number of links found between C and E j orwhich is better, when you have finilhed your two equi-lateral 4 An APPENDIX, &c. lateral triangles, one end of the chain hanging at A,itretch the other at full length over the ftick at G,…
Surveying
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