"The first really new type of compass since 1936. In this video, I present a genuinely different approach to compass design — a liquid-free baseplate compass that uses induction (eddy-current) damping instead of fluid, meaning it can never develop bubbles, regardless of temperature or altitude."
Man donating his new design to the public domain:
"The first really new type of compass since 1936. In this video, I present a genuinely different approach to compass design — a liquid-free baseplate compass that uses induction (eddy-current) damping instead of fluid, meaning it can never develop bubbles, regardless of temperature or altitude."