15. Manufacturer to submit prototypes of weights, measures and weighing and measuring instruments

(a) in a case where such weight or measure or weighing or measuring instrument is being manufactured at the commencement of this Act on the pattern of an existing design, within such period as may be prescribed;
(b) in any other case, before he commences to manufacture that weight or measure or weighing or measuring instrument, submit to the prescribed authority a prototype of the weight or measure or weighing or measuring instruments, as the case may be.