If the forward movement mechanism of the record sheet is controlled by the clock, the period during which the latter will run correctly after being fully wound must be greater by at least 10 % than the recording period corresponding to the maximum sheet-load of the equipment.
Má rialaítear an mheicníocht ghluaiseachta ar cúil den leathán taifid leis an gclog, ní foláir go mbeadh an tréimhse lena rithfeadh an ceann deireanach i gceart tar éis dó a bheith tochrasta go hiomlán níos faide faoi 10 % ar a laghad ná an tréimhse taifeadta a chomhfhreagraíonn d’ualaigh leatháin uasta an trealaimh.