# The Weights and Measures Regulations 1963, Paragraph 3


Metric system
End measures
Line measures
Measures made of metal: purported value
Error in excess
Error in deficiency
Error in excess
Error in deficiency
millimetres
millimetres
millimetres
millimetres
1 millimetre
0.25
0.025
0.05
0.025
1 centimetre
0.2
0.1
0.1
0.05
1 decimetre
0.5
0.25
0.2
0.1
1 metre
1
0.5
0.5
0.5
2 and 3 metres
2
1
1
1
10 metres
—
—
5
5
20 metres
—
—
7.5
7.5
In the case of measures made of material other than metal, the foregoing amounts of error shall be increased to double the said amounts.

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Source: https://www.legislation.gov.uk/uksi/1963/1710/schedule/1/paragraph/3 (the official version)
Page: https://openlegislation.uk/weights-and-measures-regulations-1963/schedule-1/paragraph-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.