Invar tapes are made of an alloy of:
ANickel and steel
BCopper and steel
CTin and steel
DAluminium and steel
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Related Questions:
The true bearing of a line is calculated as:
The principle of working of an optical square is based on
If the fore bearing and back bearing of a line do not differ by 180°,then either one or both the ends of line, are affected by:
Finding the location of the station occupied by the table on the paper, by means of sighting to two well defined points whose locations have previously been plotted on the paper, is known as:
If the field temperature is lower than that which the tape was calibrated, it results in: