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Fig. 4.7. Hand level
Whenever possible, a spring-balance tension handle should be attached to the
forward end of the tape to indicate whether or not the correct pull or tension is
applied. Applying the correct tension is particularly important if a relative accuracy
of better than 1:3000 is required.

Fig 4.8 (a) Spring Balance (b) Tape thermometer
For precise taping with accuracies better than 1:5000, temperature correction
must be made to account for the possibility of tape expansion or contraction; tape
thermometer may be used for this purpose. It is attached to the tape near one end;
the bulb should be in contact with the steel.
A tape clamp handle is used for providing a firm grip on the tape at any
intermediate point, without causing damage to the tape or injury to the surveyor
from the steel edge.

Fig. 4.9. A tape clamp handle

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