NO Durham never used 1938 equipment... we had advanced into the modern day age of 1980's when i left!!
i remember sat on top of a motor (big one) with a new out the Box "tiff" (fast track engineering branch member) he had a bridge megger and wanted to check the fields of the motor as it was not working correctly!! after a quick discussion about where he dug that out from he insisted it was the tool for job....!! learnt it in training!
any way i clip leads on and hold in place while he whirls this handle up and I move the dials.....!! any way after 10 mins or so he was getting agitated and saying oh its too hard to do ...... i walk away and come back with a IR tester and ZAP ZAP ZAP.... oh yes Blue Phase has gone to earth....!
MUPPET!!!!
needless to say i never saw him use the BM again..!!