TTRBT4BK
Mechanical Genius - Simple Circuitry - Black
US $9.95

White, Black
Follow the tracery of this circuit board and find your way through resistors, capacitors, and transistors. Love Tron? Building a robot? You're going to need this one to help you out! Larger circuits are about 1 1/8", from the 'Mechanical Genius' collection by Mo Bedell for Timeless Treasures.