Originally Posted by
cooperplace
She was lucky. A colleague working on a car (not chopper related, I know) put his hand in the engine bay, wedding ring bridged between a 12V contact and engine block, in a few seconds it cauterized the blood supply; he lost the finger. Since hearing this I remove my wedding ring when doing work like this.
Metal watch strap will do the same for you.
Rings have been a known hazard for years.
The military safety poster from 40 years ago showing all the tendons torn out of the hand and arm when a ring had caught on a projection.
sticks in the mind!!!!