I bought one and am sending it back. I was going to use this on a small powerboat and realized the compass marks only "E" and "W" and those are on top. Not easily visible unless the compass is mounted below your line of sight. Yeah, I know 0 degrees is north and 180 degrees is south but in this boat I'm not doing complex navigation and just want to quickly verify my direction. Silly setup for a small powerboat, even sillier for a kayak which, I gather, is their intended audience.

Nicely made though. And a slick mounting system. 2 stars

The compass works great. Nautical compasses are always read in numerical degrees- anything else would be worthless when navigating using a chart. The fact that this compass is easily removed is also a nice feature. Would buy again. 4 stars