Exercise 21
Ex21-1 Enumerate the fundamental lines of a theodolite instrument and state their relationship in a permanently adjusted instrument.
Ex21-2 Describe why and how the following tests are conducted on a theodolite ?
(i) Vertical circle index test; (ii) Spire test; (iii) Plate level test; (iv) Collimation in azimuth test.
(i) Vertical circle index test;
(ii) Spire test;
(iii) Plate level test;
(iv) Collimation in azimuth test.
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