Has anyone, anywhere in the world got the Instruction Manual for the British made Hatfield Instruments 1000 "Psophometer" they can scan or photograph with a smartphone please?
One of these instruments is called for to use with the calibration of the Marconi TF2016A signal generator, and I could do with the instruction manual for this Hatfield unit!
It is now impossible to get anything from Telford Electronics in the UK since Marc Christian died last February!
Any reasonable price and postage paid!
Chris Williams
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