I'm very impressed and I want to congratulate you of your hard work with this gauge!!
I want to ask, If the Arduino Mega ADK board, and LCD with its board, and sensors (pressure and height) are the only stuff I need to do similar stuff?
In first photo I can see some more parts, for example something looking like a relay etc. On your photo I selected parts I don't know what they are, please help me and tell what it is and what I really need to make my own digital pressure gauge (I have pressure senders 0-150psi):
https://lh3.googleusercontent.com/-K...-58-52_604.jpg
Regards, moryc7