These dual purpose compasses may be used quite well if you have either one of Chuck Sutherland's Nav aid or a grid and compass rose printed on transparent mylar. the plastic base I described on a common transparent compass is necessary to apply readings on a chart, for both distance and bearing calculations. these dual purpose will not perform this function. floating is good in any piece of equipment related to kayaking except to the fishermen I imagine. regards, gabriel ralph diaz wrote: > > From: "Michael Daly" <michaeldaly_at_home.com> > > > From: "Gabriel L Romeu" <romeug_at_erols.com> > > > > > > > The hand held > > > facilitates taking bearings from the kayak, generally from 2 points > > > anywhere from a 360 degree axis of the paddler. This may be done with a > > > deck compass, but is very cumbersome having to rotate and point your > > > bow. > > > > One option to avoid this are compasses similar to the Nexus ( fka Silva) > > 70UN and 70UNE. These attach to the deck in a mount that allows them > > to be removed easily and held for taking bearings. > > > > The plus side includes: a good handheld design (made for sighting without > > a mirror). They float if you drop them. > > > > Down side includes: they are kinda bulky compared to a flush mount and > > some folks complain of them coming loose (though this hasn't yet happened > > to me yet). > > I have the Silva UN70 which I have not used in quite a while. When I did, I > tethered it with a thin piece of chord. The unit has a tiny hole in its > handle or base that allows this. This way it can't come loose. And as > indicated the unit will float if overboard. Its compass card is highly > visible from all angles and the needle dampens in a split second. It makes > a great hand bearing compass because of the almost pistol-like grip handle. > > ralph diaz -- Gabriel L Romeu http://studiofurniture.com İİİİİ furniture from the workshop http://studiofurniture.com/diary İİİİİ life as a tourist, daily journal http://studiofurniture.com/paint İİİİİ paintings, photographs, etchings, objects *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************
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