conveniently with J&R Engineering hydraulic boom gantries as detailed in this brochure. The exclusive LIFT-N-LOCK feature holds up the load in the event the lift cylinder loses pressure. Other exclusive patented safety features include Stabilizer bars, Octagon booms, Load sensing, Digital height indicating system and Oscillating header plates. Field proven models up to 1800 ton capacity and lift heights up to 100 feet. Crawler mounted gantries up to 700 ton capacity and other specialized lifting and transportation equipment available.