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Re - run of fine levelling procedure
Position a
Bubble follows LEFT THUMB
Bubble follows LEFT THUMB
Position a
Position a
Position b900 to position a
Bubble still follows LEFT THUMB
Position b900 to position a
Bubble still follows LEFT THUMB
Position b900 to position a
Position a
Repeat position a)
Position a
Repeat position a)
Position c
Bubble drift is 3 divisions
Remove half the drift i.e. 1.5 divisions
Position c
Bubble drift is 3 divisions
Remove half the drift i.e. 1.5 divisions
(using two footscrews)
Position d
Bubble drift is 3 divisions
Remove half the drift i.e. 1.5 divisions
Position d
Bubble drift is 3 divisions
Remove half the drift i.e. 1.5 divisions
(using one footscrew)
The bubble is now “FROZEN” in 1.5 divisions to the left
and should stay this much out wherever it is rotated to.
SCREWSandOpticalPlummet
LEGSandPond Bubble
SCREWSandPlate Bubble
HEADandOpticalPlummet
SCREWS LEGS SCREWS HEADSCREWS LEGS SCREWS HEADSCREWS LEGS SCREWS HEADSCREWS LEGS SCREWS HEADSCREWS LEGS SCREWS HEADSCREWS LEGS SCREWS HEAD
Locking Wing Nut
Arrow pointing up - Theodolite is released
Target
Vertical Circle - (for vertical angles)
Face LeftF/L
Transit Telescope
Rotate Theodolite
Face Right(F/R)
