Aviation
The Aviation Industry uses 10,000 PSI (700 Bar) Hydraulics, Hand Pumps & Cylinders on the wheeled boom that is attached between Aircraft Tugs & the Aircraft to set the height of the boom arm against the height of the front undercarriage for towing.There are many other applications for maintaining the aircraft such as jacking open engine cowlings, servicing brakes, changing tyres & supporting the weight of the aircraft while undercarriage maintenance is carried out.