


Tuning fork 'A'

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Mounted tuning fork

Tuning fork with chamois case

Set of eight tuning forks, Unknown maker, 1935-1950
1935-1950

Tuning fork
1701-1900

60 Cycle Tuning Fork

Tuning fork

Tinsley & Co electrically main

Mounted tuning fork

Tuning fork

Set of eight tuning forks
1860-1900