The Buckingham Jacking-Shoring Post extends quickly with pin holes every 4" on center. A rotating collar with pin holes fine-tunes the extension in 1" increments, while a threaded locking collar secures the load in place with infinite adjustment. **Two 5-ton jack cylinders do the lifting, and are extended with a hydraulic hand pump (Rented Separately:
HYDRUALIC HAND PUMP ).** Precise lifting and weight readings are achieved by viewing the pressure gauge and using a conversion rate of 1000 lbs of hydraulic pressure = 1 ton of weight. Jacking with the posts can be done in 4" increments by resetting the pin for the next lift. When the desired height is reached and the threaded locking collar is tightened, the jack cylinders may be retracted and removed from the shoring post with the load safely and securely supported in exact position.