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Originally Posted by tjones1
(Sorry, I must hijack for a few).
Sweet Tim, what do you do with them? I've worked with some very powerful lasers in the lab, etc, but that's about it.
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Mostly high precision metrology applications. The gear I work with can resolve measurements to 1 micron and angle/level to +/- 1 arc-second resolution over distances up to several hundred feet. These are primarily class 3a & 3b devices, but I occasionally work with some class 4 CO2 & Yag equipment as well - biggest was around 150 watts.