Set of eight tuning forks, Unknown maker, 1935-1950
1935-1950
60 Cycle Tuning Fork
Mounted tuning fork
Mounted tuning fork
Tuning fork marked 'UT5 2048'
Tuning fork used as test fork
1880
Tuning fork used as test fork
1880
Tuning fork used as test fork
1880
Tuning fork
1701-1900
Tuning fork with chamois case
Mounted tuning fork
Mounted tuning fork
Mounted tuning fork
Mounted tuning fork
Mounted tuning fork
Tuning fork
Exposed tuning fork sustained magnetically with driving coil
Tuning fork 'A'
Tuning Fork used for showing Lissajou's Figures, 1870
1870
Tuning Fork used for showing Lissajou's Figures, 1870
1870
Tuning Fork used for showing Lissajou's Figures, 1870
1870
Tuning Fork used for showing Lissajou's Figures, 1870
1870
Mounted tuning fork
Tuning fork marked 'SOL6 6144' by Rudolph König
1885
Tuning fork used as test fork
1880
Tinsley & Co electrically main
Tuning fork
Mounted tuning fork
Set of eight tuning forks
1860-1900
Tuning fork marked 'FA6 5461.3', by Rudolph König
1885
Tuning fork marked 'I3 6656', by Rudolph König
1885
Tuning fork marked 'I4 7168', by Rudolph König
1885
Tuning fork marked 'SI6 7680', by Rudolph König
1885
Tuning fork marked 'UT7 8192', by Rudolph König
1885
Tuning fork marked 'I1 5632', by Rudolph König
1885
Demonstration model of tuning fork control unit used at Rugby radio station
Pair of tuning forks marked W.E.C. London
Tuning fork marked 'RE6 4608', by Rudolph König
1885
Tuning fork marked 'LA6 6826.6', by Rudolph König
1885
Tuning fork marked 'MI6 5120', by Rudolph König
1885
Tuning fork marked 'UT6 4096', by Rudolph König
1885
Diapason, or tuning fork, Branly collection
1800-1950