The PMP Diagnostic Tool for Veeder-Root Probes is designed and manufactured by PMP Corporation to help reduce probe diagnostic times, costly hardware swaps and warranty call backs. In a few easy steps, the service technician can determine where the problem is; console, wiring or probe. Since the Diagnostic Tool is only 2 1/2 inches in diameter by 24 1/2 inches long, the compact design allows for easy use right at the console. Step-by-step instructions are clearly printed on the Probe Diagnostic Tool. The technician can verify console responses with known values, while a PMP five foot probe cable (included) will make the diagnostic process even easier.