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I've got one someone "loaned" me. Except I can't seem to get him to take it back.
Seriously, they work. They work at any distance, and at great distances, and in bright light and almost no light. They work on non-reflective surfaces.
But the calibration thing drives you nutz, and they are bulky, slow and cumbersome so I went ahead and bought a Leica laser. It's way cool. FWIW, Dutch.
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