off subject request for info on a NRI model 11 VTVM

[Graham Proctor]

Thanks  in advance for an off subject request. 
I have  acquired an NRI, National Radio Institute, model 11 VTVM. 
I am  missing the probe which should have a resister and switch in it for 
Ohms /  DC as I remember. 
I am  in need of a schematic for it and calibration instruction.   If 
someone has a copy I will gladly pay  for the copies. 
An  electronic copy would also do. 
I have  searched the web to no avail. 
Thanks  again. 
I am  always amazed at the knowledge that is available on the reflector. 
Graham  Proctor

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