Bidspirit auction | Extremely Rare Tammeter TV Audience

Extremely Rare Tammeter TV Audience Recording Clock - An extremely rare and important example of the electro mechanical tammeters used in Europe to record television viewing for ratings in the 1960s, much like the later Nielsen Boxes. Few examples have survived, with even fewer outside museums. TV Recording Clock, Marked Tammeter, Property Of Television Audience Measurement Limited, S La Rose Inc, Made In England. Includes Original Ad. Approximately 8.375D x 8.375H x 7.5W in.