Portable Wheatstone Bridge

Made in England
Pye Scientific Instruments
Cat.No. 7383
Ser.No. 45,801
W.G.Pye & Co Ltd.
Granta Works Cambridge
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[calibration label]
Inst. No. 45801
Division SD CQD EMC
Retest before 24-8.95
E. Standards and Cal'b Labs. C.Q.D.
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ETL 909
Cal Period 12 months

This high quality instrument has a nice solid wooden case, robust controls and was made by WG Pye & Co, probably in the 1950’s or 1960’s. It is a four decade instrument with separate divide and multiply switches. Provision is made for an internal or an external battery.

This instrument was used in the EMC section of CQD.