The standard instrument used for measuring horizontal distances is the Steel Tape. A Constant Tension Handle is usually applied as well. Since both ends of the tape need to be firmly and accurately held, taping is usually a two man operation.
Whilst the basics of measuring a distance with a tape are very simple, there are a number of correction factors that can be taken into account.
Corrected Distance = | |
Measured distance + (1) + (2) + (3) + (4) + (5), |
Where (1) to (5) are:-
For accuracies of 1:5000 to 1:10000 you need only apply (1) and (2).
For 1:10000 to 1:20000 apply (1), (2), (3), and (4).
For
accuracy greater than 1:20000 use all 5 corrections.
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