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Title: Irritating... But it works.
Review: I've owned a few Brunton Compasses. Why "a few?" I volunteer for a local S.A.R. organization. Over the years I have discovered that ALL of their liquid filled compasses WILL develop an air bubble in a short period of time. Even my 8099 has one. Sure, in the owners manual, they say that if a bubble develops it does not effect the accuracy and it is easily removed... Only to reappear (they don't mention) after about an hour or so. I would stick with a decent Silva. Rare to have any problems with the ones I've owned.
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