Surveying
For accurate work, the steel band should always be used in preference to chain because the steel band

can be easily repaired in the field
is practically inextensible and is not liable to kinks when in use
is easier to handle
is lighter than chain

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Surveying
Accidental errors

All of these
Are generally small
Cannot be removed by applying corrections to the observed values
Do not follow any definite mathematical law

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