Gas meter, dry type: 293mm height x 280mm width x 195mm depth, grey, made by Perfecta Meters, London, 1929, serial no.3950, slot meter type , slot calibrated from 50 to 504, with prepayment scale 0-2000 cubic feet, rectangular dial enclosure with one circular dial (0-2) and a digital counter (6 significant figures) in cubic feet.