Metrotest MPAT30

[Dataforensics]

Hi,
I found an old dumped Metrotest MPAT30 pat tester, there is a 1992 cal sticker in it so at least that old.

Seems to work apart from reading high on the 'run current' test.

I have searched the Internet in vain for a service manual or even a user manual. Think the UK Metrotest was bought out by Martindale.

Can anybody point me to a likely manual location.

Admit I am probably out of luck with something that old.

Thanks