The Most Bizarre Medical Tools from Back in the Day

Electr0-Retinogram

Patients had to put that device on their face to measure the electric potential of their retina’s.

Jellyfish can sting even when they're dead.
Only one NFL team has a plant for a logo.
There are more than 24 time zones around the world.
A German and British aeroplane shot each other down in Norway during WWII. The crew met and helped each other survive. Two of them later visited each other many years after the war was over as friends.