The very first reading taken is called
ABack sight
BFore sight
CIntermediate sight
DInvert
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Related Questions:
Which is the advantage of water supply in intermittent system?
Which one of the manometer is most sensitive?
In ------- Ranging, the end stations are not indivisible
The horizontal platform in between two series of step is
It is a tank is also provided just on the upstream of the power to control the pressure variation and eliminate the effect of water hammer