R.A.F. Henlow Signals Museum Exhibits for disposal

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Measuring Set Telegraph Distortion RX	Meter Digital Frequency SA520	Meter Electronic Test	Meter Field Strength I-95 BM	Meter Frequency Type BC-221-N

Electronic Test Meter

AVO Electronic Test-meter MkII Serial 2172. Type ETM4

A sensitive valve voltmeter and component bridge that uses a double triode 6SN7GT valve in a conventional bridge circuit.
For RF measurements there is a probe that contains a double diode 6AL5 valve.

Meter Electronic Test (Photograph Number 0322)

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