... unit2)4 in 1 test line:Brake tester,Suspension tester with Wheel load,Sideslip tester (single or double plates) and PC ... unit3)5 in 1 test line:Brake tester,Suspension tester with Wheel load, Sideslip tester (single or double plates), Speedometer and ... able to integrate with other digital diagnostic device:Gas analyzer,Smoke meter,Engine Analyzer,Headlight tester,Sound meter,Chassis dynamometer.