Southern Instruments
of Camberley.
1938 Private company.
1957 The Oscillograph Division offered single and multi-channel Cathode-ray Oscillograph recording equipment. Pen Recorders, Transient Recorders, Engine Indicators, Recording Cameras, Electrical Gauges and Transducers for measuring Pressure, Force, Vibration, Acceleration, etc.
1961 Electronic engineers and manufacturers of electronic instruments and apparatus, oscillographs, oscilloscopes; designers and manufacturers of data handling and recording equipment, analytical instruments and electrical control equipment. 450 employees. [1]