(1)Where a court of summary jurisdiction imposes a fine on a person convicted of an offence, the court may, either at the same or at any subsequent time, order payment of the fine by instalments of such amounts, and at such times, as it may think fit, and where any instalment is not paid by the time so ordered, the accused shall be liable to imprisonment for such period as bears to the period appropriate to the total amount of the fine the same proportion, as nearly as may be, as the sum of the unpaid instalments bears to that amount.
In this subsection the expression "period appropriate to the total amount of the fine " means the period specified by the court in default of payment of the fine or if no such period is specified, the maximum period applicable to a fine of that amount in pursuance of section forty-nine of this Act.
(2)In the application of section forty-five of this Act to any person imprisoned in default of payment of any instalment of a fine, the sum of the unpaid instalments shall be deemed to be the fine.