Advanced Hydraulics Troubleshooting Learning System by Amatrol (950-HT1). Teaches advanced hydraulic troubleshooting like no other product. By providing a hands-on learning station that models a real-world hydraulically-powered machine and includes over 40 faults that can be inserted into the system. The 950-HT1 is the first product to offer a realistic electrical component troubleshooting experience for students, because the faults are inserted throughout the system, including the hydraulic, mechanical, and electrical components.