Mervyn Unisphere Mirror Drum Television
1933-35
Four items of television transmission equipment associated with John Logie Baird, 1928-1938: 1. 30-line mirror drum from Bush Televisor, c1933 2. 14" mirror drum with twenty mirrors and motor, 1936 3. 10" mirror drum with twenty mirrors, 1938 4. Ventriloquist's dummy head, 1928.