Footage electric fires being tested, London.
Electric fire testing. London.
M/S Man checking thermometer readings. C/U Man checking thermometer readings, and pan to electric fire. C/U Man writing down thermometer reading. C/U Graph. C/U Man checking thermometer. C/U Electric fire, pan to thermometer.
Cataloguer's note: The commentator says that the tests are being carried out to qualify electric fires for the Institute of Good Housekeeping guarantee.