The methods used in primary level and triangulation work in unsettled and broken country (1909)
Stewart, John Truesdale · leaf 44
ac?n* of at least tw° standard bench marks ineach township or equivalent area surveved,e<cept in forest-cladand mounta n areas, and these bench marks shall be est ab l i ah ed, whenever practicable, near the township corners of the public-landsurveys . 2. For each general locality or field… … I y n4tt-dh walks, preferably tablets cemented ih so^e solid masonrystructure, tft whifth will be referred *U ather b»nah R4ri<« in theneighborhood. A reference mark for each of these benches must beestablished. 3. Standard bench m a r << s established in the course of thework should be so…
Geodesy · Surveying · Triangulation · Theses
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