Demonstration of Nielsen Instantaneous Audimeter for the Larkins
- 27 February 1959
Television Press Limited photograph titled 'Evolutionary development in audience research'. Image shows Bill Harris explaining to the Larkins (David Kossoff, Ronan O'Casey, and Ruth Trouncer) the central control panel of his revolutionary Neilsen Instantaneous Audimeter. The device measured audience engagement from individual television sets in people's houses. 'At present it takes 10 days to work out the number of people viewing a television programme. Soon it will take only 10 minutes'.