We checked out the CST/berger RL25 series of self-leveling rotary lasers back in June of this year at Bosch’s 2012 Media Event. CST/berger is well-known for making serious laser levels and the USA-based (Illinois) company is always on our radar for innovative and trending laser technology. The new RL25H Exterior and RL25HV Interior/Exterior Self-Leveling Rotary Lasers are particularly of interest to us because they take the power of rotary laser and package them into a more durable product with less moving parts. These are the products you use on a regular basis if you’re doing any sort of grading, leveling or excavating work. CST/berger’s RL25 lasers are IP56-rated and have a very durable overmold. They scream “heavy duty”. Of course, they can also reach 2000 feet and have an accuracy of 3/32″. That’s tight enough tolerance for all but the most amazingly stringent applications. There are two models we checked out, the RL25H with a horizontal-only beam and the RL25HV with both horizontal and vertical lasers.