Reminds me of the Sega mechanical game schematics that looked like a blueprint. About the size of a pool table. Really awesome. Until you read the note in the corner. Due to shortages, wire colors might not be consistent throughout the game. I don't really think they had shortages. They just didn't waste anything, no matter how short. A wire from one point to another might change colors many times as you found these short pieces strung together.

LTG : )