The WPS500X graphs the internal pressure in a cylinder whilst the engine is running. The ultimate compression test - not just peaks
Understanding running compression waveforms
PicoScope In cylinder transducer compression and cam timing 91
Compression testing
Pressure School Part 2 – Compression Test, A Running Diagnosis
In Cylinder Pressure Waveform Analysis Special Guest Brandon
DIY Pressure Transducer - CorvetteForum - Chevrolet Corvette Forum
Pico PP939 WPS500X Pressure transducer Kit
WPS500X Compression Test graphs internal cylinder pressure
In-cylinder Analysis