Cambridge Instruments pattern L meter Moving coil instrument with internal metal oxide rectifier for measuring alternating current. Scaled 0-120 micro amps at 232.5 ohms. Working. Cambridge Instrument Company Ltd, UK, date unknown.
Cambridge Instruments pattern L meter Moving coil instrument for measuring 0-60 and 0-120 micro amps DC scaled 0-60 micro amps at 0.83 ohms. Working. Cambridge Instrument Company Ltd, UK, date unknown.
The first is one of many instruments collected by Jack Davidson C Eng FIEE which I have been given by Dr Graham Winbolt and the second was part of a collection of many instruments collected by Bob Evans given to me by his daughter Alice Kirby.
How much is it worth? Instruments such as this are of little use today and not many people seem interested in them. Expect to pay �10-�15.
