explain temporary adjustment of dumpy level
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The temporary adjustment of a dumpy level consists of Setting , Leveling and Focusing . During Setting, the tripod stand is set up at a convenient height having its head horizontal (through eye estimation). ... The bull's eye bubble (circular bubble), if present, is then brought to the centre by adjusting the tripod legs.
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Temperary adjustments of dumpy leve consists
ẞetting up
(I) fixing the instrument over tripod
(b) leg adjustments
2.Levelling up
a.. levelling with a three screw head
3.. Elimination of parallax(Focussing)
focusing eyepiece
Focussing the objective
hope u understand
Thank you
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