At the place I work, we have a processing documenting calibrator, which we use regularly for controlling valve actuators. This one is old, but to get a feeling about the price, I found its successor, which costs just below $8000.
We need it very often and so we were looking for additional four units. I decided to build one from scratch using Arduino Mega and a TFT touch screen. This project also uses an Arduino Mega shield with breakout pins I designed some time ago for the LCD TFT screens.