QUESTION $1$

$1\mathrm{.}1.$ Calculate collimation Error between control points BMA and $BMB$ and fill in the necessary answers to determine the collimation error of a levelling instrument: $BM$ A to $BMB=73,500$ meters.

$\backslash$table$[[$Instr$.$ Half way between,$],[BMA$ and $BMB,],[BMA=,1,245],[BMB=,1,742],[,]]$

$\backslash$table$[[\backslash$table$[[$Instrument set up close$],[$to BM B$]]],[BMA=,1,368],[BMB=,1,868]]$

$(5)$

$\backslash$table$[[$Correction from,reading,reading,correction$],[$Adjust crosshairs,,,reading,,reading$]]$

$\backslash$table$[[$Collimation error over $...............$m $=,],[$Collimation error over $125,000m=,]]$