I use an ancient DCL digital, and a newish Draper analogue, they give matching readings. They should make the ones on electric pumps illegal unless certfied to a calibration, the average punter could be running around bouncing like Tigger on them, I tried one against my set up and it had the tyres 15psi high.
Ah Bless! James you're like the old dog that we cannot bring ourselves to take into the back field, and dispatch. We'll let you stay, sleeping by the Aga dreaming of chasing rabbits and letting off the occasional room clearing fart!🤭
So, a quick recap, therapy includes swearing and undoing/tightening bolts? Isn't that normal Classic Ford ownership, as for being imbecilic, that will get worse once you start searching Ebay for Ford parts 'That might come in handy' that you know never will, but look nice on the shelf. Then your recovery will be complete.