Regulation 4 Variations in dimensions

(1)

Any variation in–

(i)

a dimension (other than as to the height of a letter) specified in any of the diagrams in Parts II and III of Schedule 1; or

(ii)

a dimension as to the height of a letter specified in the diagram in Part III of that Schedule,

shall be treated as permitted by these Regulations if the variation–

(a)

in the case of a dimension of less than 10 millimetres, does not exceed 1 millimetre;

(b)

in the case of a dimension of 10 millimetres or more but less than 50 millimetres, does not exceed 10% of that dimension;

(c)

in the case of a dimension of 50 millimetres or more but less than 300 millimetres, does not exceed 7½% of that dimension; or

(d)

in the case of a dimension of 300 millimetres or more, does not exceed 5% of that dimension.

(2)

Any variation in a dimension specified in any of the diagrams in Schedule 2 shall be treated as permitted by these Regulations if the variation–

(a)

in the case of a dimension of 300 millimetres or more, does not exceed 20% of that dimension; or

(b)

in the case of a dimension of less than 300 millimetres, where the actual dimension exceeds the dimension so specified, does not exceed 30% of the dimension so specified, and where the actual dimension is less than the dimension so specified, does not exceed 10% of the dimension so specified.