Will this add on work with the Pro Plus 2.1...I have the Pro Plus 2.1 Standard and want to add the compass?
CAROL M The compass works great. It was not hard to install. We have had no problems with it. Good Luck
PAUL D it functions sufficiently as a standard compass. main reason for purchase was to replace damaged unit for pro plus computer. it also helps protect computer
DENNIS V I believe it should work. Go to Oceanics site. They have all the compatabilities.
KIRK K I was in a similar buying/shopping situation a while back. I am not 100% sure that your anticipated compass perfectly fits the regualator that you have. But I think that it does. So why not buy the compass and if it does not go into place perfectly return it as the "wrong" size.
There is a curve ball in fitting it together but once you figure it out, it was easy and is attached very well.
PHILLIP C If the compass is for the same model computer - pro plus 2.1 then yes. the compass replaces the top handle - as i recall it does come with instructions. If not it replaces the top handle - with the compass in your hand any screws / attachments should be obvious.