Theory question 102
Farm Surveying and Planning(a) What is farm surveying?
(b)(i) List six surveying instruments (ii) Write short notes on any four surveying instruments listed in (i).
Show the model answer
(a) Farm surveying is measuring and mapping farmland to determine its size, shape, boundaries and features
(b)(i) Any six: ranging poles; Gunter's chain; measuring tape; prismatic compass; theodolite; arrows/pins; offset staff; cross-staff; plane table; level and staff
(ii) Any four: ranging pole – painted pole for marking stations and straight lines; Gunter's chain – 20.1 m chain of 100 links for measuring distance; measuring tape – linen or steel tape for measuring short distances; prismatic compass – measures bearings; theodolite – measures horizontal and vertical angles; cross-staff – sets out right angles
Name six, then describe what four of them do.