How to look backward and forward through backsight
In Figure 1-19, the instrument would be set up at instrument position one (IP1); a backsight
would be taken on benchmark one (BM1) and a foresight on the turning point (TP).
. A point to be used to determine the placing and/or elevation of the surveying instrument.
It had a heavier barrel that was exposed at the muzzle, a different front sight block, two-piece striker mechanism, longer stock, more robust backsight
Nevertheless, after adjusting the coordinates of the direction point (backsight
point) of the baseline, the direction angle may change.
Note that when the instrument is set up halfway between the two stations, Figure 5-9, the error between the rod reading and horizontal is the same in the backsight
as in the foresight.
Height of Instrument--The elevation of the line of sight of a surveying instrument, which is obtained by adding the backsight
to the elevation of a known point.
Tenders are invited for Tender For Ic Ramp Backsight
Note that the true foresights are stations that are paired with backsights
. The note keeper must remember that the first backsight
and the last foresight are also a pair.
For M/Cingof Receiver Bracket Backsight
On Vmc Bmv45tc30 Bfw Agni Withtwin Pallet Saf No.
In surveying, the parts of an angle are called the backsight
, the vertex, and the foresight.
Tenders are invited for Supply of Ic Ramp Backsight