Section 94(7) in The Bihar Motor Vehicles Rules, 1992
(7)Sealing. - (a) Every meter shall be so made as to be capable of being sealed by inset lead scale after the meter has been tested and approved. The holes or recesses for the scale shall be 3 millimetres deep and shall taper gradually in diameter from at least 18 millimetres at the bottom to 16 millimetres at the top.(b)When the gear which operates the distance recording apparatus is not contained in the main part of the machine, the case of cover enclosing it shall be so made that it may be sealed either by the inset or wired on type of seal.(c)All meter cable connections shall be so made as to be capable of being sealed by means of inset or wired on lead seals, to prevent improper removal.
