AC electric meter
circa 1930
meter
Type PR Printometer made by Ferranti Ltd
Dual-rate electricity supply meter
meter
kilowatt-hour electricity supply meter
circa 1904
Type NF3 Megawatthour Meter made by Associated Electrical Industries Ltd
DC electricity meter
circa 1900
Type RE Printometer made by Associated Electrical Industries Ltd
Direct current
Type PR Mk II Electronic Summator made by Ferranti Ltd
Chamberlain & Hookham DC Ampherehour Meter
Landis & Gyr Maxiprint printometer
Landis & Gyr Ltd FF1 wire unbalanced load meter
