EMI SCOPE / VOLTMETER
A rather odd instrument, combining a volt meter with an oscilloscope.
The oscilloscope section is uncalibrated and hence was intended to give an indication of the shap of a wavefrom more than an accurate measurement.
The use of large octal or similar valves indicate that the instrument surely dates from the late 40's or possibly the very early 50's. However the controls are quite colourful for the period, are they original ?
|Basically clean and sound. Some evidence of repairs in the distant past, with the E.H.T. rectifier (probably a SenTerCel) replaced by four more modern semiconductor diodes in series. The H.T. smoothing electrolytics have also been replaced.
|Bought locally for a fiver.
For something with only one more valve than a domestic radio,
the mains transformer (rear of right-hand image) is enourmous.
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THE OSCILLOSCOPE GALLERY
20th July 2003