Elverson Oscilloscope
Oscilloscope Co, of 47 Victoria Street, S.W. 1
See Arthur John Hawes Elverson
1924 'The Elverson oscilloscope (Herbert Kennedy and Co.) by intermittent illumination made a machine at 1500 revolutions appear to be either stationary or working at 150 revolutions, enabling faulty action to be detected and located.'[1]
Used for investigating the behaviour of machinery under actual working conditions.
1924 The "Elverson Oscilloscope." by A. J. H. Elverson - published.