Paragraph Separate control instrument (Clause 2.8.3.1 of Part 1 of OIML R 106)
A control instrument capable of being used to determine the mass of each reference wagon when stationary and uncoupled shall be available for in-motion tests. The error of that instrument shall not be greater than either of the following values:
(a)
one third of the appropriate maximum permissible error for in-motion weighing in clause 2.8.2 and Table 1 (set out in Schedule 6) if the control instrument is verified immediately prior to the in-motion tests;
(b)
one-fifth of the maximum permissible error if the control instrument is verified at any other time.