# The Non-automatic Weighing Instruments Regulations 2016, Paragraph 2.1


The following accuracy classes have been defined—
(a) I special
(b) II high
(c) III medium
(d) IIII ordinary
The specifications of these classes are given in Table 1.
Table 1
Accuracy classes
Class
Verification scale interval (e)
Minimum capacity (Min)
Number of verification scale intervals n = ((Max)/(e))
minimum value
minimum value
maximum value
I
0,001 g ≤ e
100 e
50 000
II
0,001 g ≤ e ≤ 0,05 g
20 e
100
100 000
0,1 g ≤ e
50 e
5 000
100 000
III
0,1 g ≤ e ≤ 2 g
20 e
100
10 000
5 g ≤ e
20 e
500
10 000
IIII
5 g ≤ e
10 e
100
1 000
The minimum capacity is reduced to 5 e for instruments in classes II and III for determining a conveying tariff.

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Source: https://www.legislation.gov.uk/uksi/2016/1152/schedule/6/paragraph/2.1 (the official version)
Page: https://openlegislation.uk/non-automatic-weighing-instruments-regulations-2016/schedule-6/paragraph-2.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.