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The relevant essential requirements of Annex I, the specific requirements of this Annex and the conformity assessment procedures listed in this chapter, apply to material measures of length defined below. However, the requirement for the supply of a copy of declarations of conformity may be interpreted as applying to a batch or consignment rather than each individual instrument.
Material measure of length | An instrument comprising scale marks whose distances are given in legal units of length. |
L is the value of the length rounded up to the next whole metre; and
a and b are given in Table 1 below.
When a terminal interval is bounded by a surface, the MPE for any distance beginning at this point is increased by the value c given in Table 1.
Table 1 | |||
a Applies to the tape/dip weight combinations. | |||
b If the nominal tape length exceeds 30 m, an additional mpe of 0,75 mm shall be permitted for each 30 m of tape length. | |||
Accuracy Class | a (mm) | b | c (mm) |
---|---|---|---|
I | 0,1 | 0,1 | 0,1 |
II | 0,3 | 0,2 | 0,2 |
III | 0,6 | 0,4 | 0,3 |
D —special class for dipping tapesaUp to and including 30 mb | 1,5 | zero | zero |
S —special class for tank strapping tapesFor each 30 m length when the tape is supported on a flat surface | 1,5 | zero | zero |
Dip tapes may also be of Classes I or II in which case for any length between two scale marks, one of which is on the sinker and the other on the tape, the MPE is ± 0,6 mm when application of the formula gives a value of less than 0,6 mm.
The MPE for the length between consecutive scale marks, and the maximum permissible difference between two consecutive intervals, are given in Table 2 below.
Table 2 | |||
Length i of the interval | MPE or difference in millimetres according to accuracy class | ||
---|---|---|---|
I | II | III | |
i ≤ 1 mm | 0,1 | 0,2 | 0,3 |
1 mm < i ≤ 1 cm | 0,2 | 0,4 | 0,6 |
Where a rule is of the folding type, the jointing shall be such as not to cause any errors, supplementary to those above, exceeding: 0,3 mm for Class II, and 0,5 mm for Class III.
The conformity assessment procedures referred to in Article 17 that the manufacturer can choose between are:
F 1 or D1 or B + D or H or G.
The relevant essential requirements of Annex I, and the specific requirements and the conformity assessment procedures listed in this chapter, apply to capacity serving measures defined below. However, the requirement for the supply of a copy of declarations of conformity may be interpreted as applying to a batch or consignment rather than each individual instrument. Also, the requirement for the instrument to bear information in respect of its accuracy shall not apply.
Capacity serving measure | A capacity measure (such as a drinking glass, jug or thimble measure) designed to determine a specified volume of a liquid (other than a pharmaceutical product) which is sold for immediate consumption. |
Line measure | A capacity serving measure marked with a line to indicate nominal capacity. |
Brim measure | A capacity serving measure for which the internal volume is equal to the nominal capacity. |
Transfer measure | A capacity serving measure from which it is intended that the liquid is decanted prior to consumption. |
Capacity | The capacity is the internal volume for brim measures or internal volume to a filling mark for line measures. |
Line | Brim | |
---|---|---|
Transfer measures | ||
< 100 ml | ± 2 ml | – 0 + 4 ml |
≥ 100 ml | ± 3 % | – 0 + 6 % |
Serving measures | ||
< 200 ml | ± 5 % | – 0 + 10 % |
≥ 200 ml | ± (5 ml + 2,5 %) | – 0 + 10 ml + 5 % |
Capacity serving measures shall be made of material which is sufficiently rigid and dimensionally stable to maintain capacity within the MPE.
The conformity assessment procedures referred to in Article 17 that the manufacturer can choose between are:
A2 or F1 or D1 or E1 or B + E or B + D or H.