Cole Ladder Safety (coleladdersafety.com) has been building the equipment for these test since 1988. The Equipment was designed and built to comply with NFPA 1932 with the testing of the Roof Hooks on Fire Dept. Ground Ladders and the Lock paws on all of the extension ladders currently made in the United States. The equipment was made with ease of use and safety in mind. The equipment uses hydraulics in those test with ease and dependability.