Only tool that identifies an imploded brake hose and accurately detects exactly where the problem lies without breaking a line. Tests improperly adjusted proportioning valves, air in hydraulic systems, power booster problems, rear brake adjustment check, and much more!. Tests sticky or frozen brake calipers. Identifies the exact cause of uneven brake pad wear. Comes with 2 load cells attached to analog gauges, each with a range of 0-5000 PSI Eliminates guesswork when troubleshooting disc brake problems. A red 'Tell Tale' memory needle on the dial allows for one-man brake testing. This innovative tool is packaged in a custom-made wooden case for first class presentation and storage.