A device that measures the area of any shape: Radial Planimeter

This device, which I've called a radial planimeter, measures the area of any shape by simply tracing around its perimeter. The video by Chris Staecker that originally inspired this project:    • A tool to measure the area of any shape   Videos with more info: • Squaring mechanism (US navy):    • Mechanical Computer (All Parts) - Basic Me...   • Integrator (US navy):    • Mechanical Computer (All Parts) - Basic Me...   • Integrator (Veritasium):    • The Most Powerful Computers You've Never H...   • Integrator (Jack Monaco):    • The Mechanical Integrator - a machine that...   Github repository (https://github.com/Daniel-Wareham/Rad...) includes: • A link to the Fusion360 file for this device • Pictures of my initial drawings and mathematical workings