31. The whole building had to be lifted with hydraulic jacks and suspended aloft temporarily while new timbers were installed. 32. In-built hydraulic jacks were standard. 33. Hydraulic jacks mounted on the eight steel tracks have lifted the building one-eighth of an inch onto steel rollers.34. A hydraulic jack uses a liquid, which is incompressible, that is forced into a cylinder by a pump plunger. 35. Divers are to attach steel cables to 26 hydraulic jacks on the barge to precut holes in the Kursk's hull. 36. In equal bursts of power, the 100 hydraulic jacks will push the lighthouse a foot every one or two minutes. 37. A plastic tube was used to enable him to breathe while rescue teams used a hydraulic jack to extricate him. 38. A ?0, 000 grant from Darlington borough council also allowed the purchase of a five-tonne crane and four hydraulic jacks . 39. Since about 1963 however hydraulic jacks are used to physically stretch the rails while they are supported on temporary rollers. 40. These boats are made from foam and fibreglass, and have hydraulic jacks that enable the motor to be jacked up.
