diagram for a positronic GPS, aka diagram for a positronic GPS, positronic gps diagram, gps diagram, and diagram
A printed schematic showing how to build something.
It tells you how to make a positronic GPS unit with the following components:
Making this would take expertise in craft, decent familiarity with hack, and decent familiarity with science.
In the upper right corner is a note: 'First discovered by Dr. Twerp.'
It weighs about 100 grams. It is a electromechanical schematic. You think it might fetch about $2 on the market.