The thing is exquisite, and very compact. It's 5/16" thick, about 1 5/8" x 2 1/4". It will fit in the smallest ticket pocket of a pair of jeans.
I think I'll keep it on me at all times. I got lost in the bush once when I was a teenager on a deer hunt; 'can't say that I much enjoyed the experience. After a couple of hours or so, the sun came out and I was able to get my bearings to find my way back to the cabin. Had I had even the most rudimentary compass on me, I'd have gotten out much sooner.
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