ANNEX IREQUIREMENTS FOR CONSTRUCTION, TESTING, INSTALLATION AND INSPECTION
III.CONSTRUCTION REQUIREMENTS FOR RECORDING EQUIPMENT
(b)Visual instruments
1.Distance travelled indicator (distance recorder)
1.1.
The value of the smallest grading on the instrument showing distance travelled must be 0,1 kilometres. Figures showing hectometres must be clearly distinguishable from those showing whole kilometres.
1.2.
The figures on the distance recorder must be clearly legible and must have an apparent height of at least 4 mm.
1.3.
The distance recorder must be capable of reading up to at least 99 999,9 kilometres.
2.Speed indicators (speedometer)
2.1.
Within the range of measurement, the speed scale must be uniformly graduated by 1, 2, 5 or 10 kilometres per hour. The value of a speed graduation (space between two successive marks) must not exceed 10 % of the maximum speed shown on the scale.
2.2.
The range indicated beyond that measured need not be marked by figures.
2.3.
The length of each space on the scale representing a speed difference of 10 kilometres per hour must not be less than 10 millimetres.
2.4.
On an indicator with a needle, the distance between the needle and the instrument face must not exceed three millimetres.
3.Time indicator (clock)
The time indicator must be visible from outside the equipment and give a clear, plain and unambiguous reading.