"Mike Cawood, HND BIT" wrote in message
...
I've just looked at my Mission 774 arm (on an old Dunlop Systemdek) and it
has tapped holes in it so the screws go up from underneath.
I don't play LPs very much, I'm afraid.
Regards Mike.

The original arm tubes for the early Mission 774 were like that. Later when
cartridges came out that had tapped threads in them (Dynavector Ruby &
Diamond may have been the first) they made an arm tube that allowed fixing
bolts to be inserted from the top down into the cartridge body. I know, I
still have both.