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The external forces are produced by sources of local attraction which may be current carrying wire (magnetic materials) or metal objects. [2] The term is also used to denote amount of deviation of the needle from its normal position. It mostly causes errors in observations while surveying and thus suitable methods are employed to negate these ...
The profession of land surveying was not regulated in British Columbia until the late 1800s. [6] Before 1891, the provincial government recognized a cadre of professional Surveyors - many of whom had been Royal Engineers [6] In 1890, the Association of Provincial Land Surveyors was launched during a two-day long meeting held in Victoria and attended by 22 surveyors. [7]
The DLS is the world's largest survey grid laid down in a single integrated system. The first formal survey done in western Canada was by Peter Fidler in 1813. [2] The inspiration for the Dominion Land Survey System was the plan for Manitoba (and later Saskatchewan and Alberta) to be agricultural economies.
This unit still exists as a location identifier on British railways, as well as all across America in what is called the public land survey system. In the United States (US), for example, Public Lands Survey plats are published in the chain unit to maintain the consistency of a two-hundred-year-old database. In the Midwest of the US it is not ...
Topographic mapping in Canada was originally undertaken by many different agencies, with the Canadian Army’s Intelligence Branch forming a survey division to create a more standardized mapping system in 1904. The indexing system used today was established in 1923, and the map catalogue officially became the National Topographic System in 1926 ...
Measured survey : a building survey to produce plans of the building. such a survey may be conducted before renovation works, for commercial purpose, or at end of the construction process. Mining surveying: Mining surveying includes directing the digging of mine shafts and galleries and the calculation of volume of rock. It uses specialised ...
AK-BC; named after Jean Leon Côté (1867–1924), Departmental Land Surveyor who worked on preliminary boundary surveys in the 1890s; later Alberta MLA and member of the Senate of Canada, 1924. Also commemorated by Mount Côté on the BC–Alberta boundary in the Canadian Rockies: Boundary Peak 66: Elbow Mountain: Wrangell† 4,245 ft 1,294 m [59
In surveying, the repetition method is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The arithmetic mean of these observations gives true value of an angle.