As far as I know, it was done on a 8 track, one inch machine. Probably an Ampex, or an MCI but, I am not sure.
Dark Side of the Moon was done an a 16 track, two inch machine.
Maybe visit Electric Lady Land studios and see if they have any documentation on their web site or try some of the Jimmi Hendrix fan sites for details from fans.
Well after doing some research on those scully decks there were a few pople who thought thats what most of the album was done on. So I thought I'd see if anyone hear had any leads.