The human eye is far better at picking up green than red, so it would make sense for laser layout tools to project green light. The problem is that green laser diodes are more expensive than red ones, which is why not many companies use them. Johnson's new GreenBrite (40-6640) self-leveling cross-line laser projects green beams that the manufacturer says are 400 percent brighter than red. This makes them easier to see in bright lighting conditions and allows the tool to be used over longer distances.
Price: $470. 888-953-8357. www.johnsonlevel.com.