"Helimech" wrote in
news:fARDb.374117$Dw6.1220465@attbi_s02:

I was a "small" ship mech back in the early 70's at PHI and
have always tried to steer clear of the heavy metal stuff
so don't know too much about them. Always felt it too far
to slip and fall from the deck. Had a feeling the 412 used
elastomeric but wasn't sure. What does the 430 have?

No idea. I think they're mechanical, but I've never seen one up
close.

--
Regards,

Stan