Posted for "Dominic V. Crain" <domcrain@pacific.net.au>:

Thanks Richard,
Yes, did  compass swing on Monday, and pulled 33 degree error on North
back to 1 degree, and East error is at 6 degrees. However, the
quadrantal errors still exist up to 9 degrees on some headings
particularly SE/NW.
Will be doing another swing next week to trim it up if possible. But I
am still interested to hear from anyone who might have installed the
SIRS compasses and how the errors are on them.
DC


 > > > The vertical card compass requires swing adjustment as I'm sure you are
aware. A brass screwdriver is included in the package as I remember.
Make
sure that there are no ferrous sources of interference. My vertical card
(PAI-700) performed well unless I was in a diving spiral (voluntarily)
when
it would "catch" and eventually release.  < < <