I took a look at the site and I sure could use a 10mm compass to free up a little space in my EDC PSK. Any idea of the quality on that little 10mm guy? I mean I don't expect it to be as accurate as the digital compass in my Timex Helix but I would need it to be at least as accurate as the 20mm model in the prepacked PSK that Doug sells.
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Learn to improvise everything.