Laser levels for outdoor or exterior use:
Visible beam or infrared (non visible) do you need to see the beam? Both indoor and outdoor use laser levels are availeable. The ability to see the laser beam can be very useful. Pipe lasers are very powerful and the beam they emit is visible outdoors. So its easy to visualize your target. So if its necessary to the type of work your doing its best to check to see if your laser emits a visible beam which is visible before you buy.
The ability to see the laser beam is becoming more common these days so you wont see many infrared type lasers in the future.