Page 2 Advertisements Column 1

Dunstan Times, Issue 3146, 4 December 1922, Page 2

An audiometer wlllicit records sounds on the same principle that a movie film records actions was introduced at Home as a silent witness' by the defence when Sidney Vino was tried on the charge of driving a noisy motorcycle. The sounds were recorded on the film in wave I Migths. which showed 1 their intensity. The defence compared those waves with those made by other machines that were allowed to pass. 'the ease attracted considerable attention because of Its scientific interest, hut Vine lost the .judgment.

A gas slot meter that gives change is the latest invention.,- Two big London gas companies have rested' the device w ill) satisfactory results, and some (rial machines are to lie installed. Immediately a shilling is inserted 12 pennies can be withdrawn. If there is only one penny in the meter when the shilling is inserted the coin may be withdrawn and used 12 times. 11 is claimed by the inventors (three Twickenham men) that the work of collection would be reduced ,20 per cent, by wcjglit. and that of be accountants proportionately lessened.