Unless you are prepared to have a very dark room whenever you use it, you would need more than the <5 mW a standard red laser pointer puts out. And this means expensive. |
These days you can get very bright and cheap lasers that can be clearly seen in daylight.
2) The scanners are very expensive if you want any accuracy at all. |
Accuracy is not that important for just knowing where to put a hold down screw, or where to avoid a bad patch in the material.