Details
Manufactured into military calibration equipment by Marconi Radio for the Ministry of Defence in the 1960's, these are beautiful vintage moving coil panel meters, with a FSD (Full Scale Deflection) of 200uA.
The classic large easy to read movement has a very fine needle and as they stand is calibrated with 2 red sections and a 20 - 30VDC section.
It is not difficult with care (took me 5 minutes) to remove the meter from its crimped casing (using a pair of pliers and a screw driver) which would enable custom calibration of the scale.
They are removed from equipment so may have the odd scratch, but in general are in very nice condition for their age - nearly 50 years old !
Lovely craftmanship, very sensitive large panel meters, quality not really seen these days.
Dimensions are 83mm diameter across the front x 65mm depth including the screw terminal connections, the glass is 60mm diameter.
The classic large easy to read movement has a very fine needle and as they stand is calibrated with 2 red sections and a 20 - 30VDC section.
It is not difficult with care (took me 5 minutes) to remove the meter from its crimped casing (using a pair of pliers and a screw driver) which would enable custom calibration of the scale.
They are removed from equipment so may have the odd scratch, but in general are in very nice condition for their age - nearly 50 years old !
Lovely craftmanship, very sensitive large panel meters, quality not really seen these days.
Dimensions are 83mm diameter across the front x 65mm depth including the screw terminal connections, the glass is 60mm diameter.