I have found that these Coherent meters with position detectors are particularly useful for high-power lasers or infrared lasers. When the beam is either too bright to look at or completely invisible, it is really nice to know you're in the center of the meter.
If anyone is looking for a meter to use with multi-watt lasers this is a great choice. (I'm really tempted to grab it myself . . . someone else please buy it before I do!)
-Alex