Lang power steering and rack tester takes the guesswork out of power steering analysis quickly and accurately, by detecting defective power steering pumps, gears, kinked or clogged lines. The Lang power steering and rack tester includes most adapters to test domestic cars and light trucks, and some imports The Lang power steering and rack tester features a 2 1/4” gauge that has a dual scale dial with ranges from 0-2000 PSI and 0-140 bar.