Rotary Laser Level

For Outdoor Work

• Decent, but poorly visible in daylight. May work on cloudy day. [1]
• Reviews say it doesn't work in daylight for this - [2]
• Visibility outdoors - can see the reflection on white paper:

• Up to 50 feet visibility in shade with this plane laser on full sun day [3]
  • Picture outside under covered porch in Florida - [4]
  • Says it can work outside [5]
  • Says you could see it 26 feet away on overcast day - [6]
  • This one reviewer found in visible in bright sunlight at 25 feet - [7]
  • Full daylight (probably not sunny) visible at 30 feet - [8]
  • 20' visible in relatively bright outdoors, and 30 feet with included reflector - [9]
  • 50 feet in shade on full sun day - [10]. Most compelling review so far. For building walls - this would work well because shade can be created relatively easily, such as if laying wall panels, on the shaded side, and natural shade occurs on north side etc.

Plane Lasers for Corners

This looks like the best choice, which includes a rotary laser for plane as well as corners. Don't get a plane laser if you can get this with additional squaring ability on 3 planes. A detector can be used as well, but this appears not to need one because it's visible in the day. This may also be a good idea with laser detectors on tractors/bulldozers for grading purposes.

• Green light = 4x visibility in day. Good for corners. $165. [11]

Rotary

• 13 best rotary lasers - topcon is $500 - [12]. MJ review - heavy D batteries are not good rechargeable option. Trip to the store when they run out - PITA. Though one can get rechargeable Ds.
• Huepar Self-leveling for $100 no detector - [13]. No detector, so difficult to see in full light.
• Huepar $239 with detector - [14]. Appears to be half the price of best brands and comparable quality. Has rechargeable bats.
• $89 rotary + 1 plane - [15]

Receivers

• Works with any red laser - [16]