there was a time when 1 inch was the 'rule of thumb' probably 25mm now
rule of thumb measures
In the event of a nuclear explosion, the general rule of thumb for safety measures is to seek shelter underground or in a sturdy building, stay inside to avoid exposure to radioactive fallout, and follow emergency instructions from authorities.
thumb nail, thumb tack, thumb screw, thumb print
My thumb, from the palm-thumb joint to the thumb-tip is 7.0 cm.
A ball of the thumb is the fleshy portion of the thumb opposite the nail, belonging to the first segment of the thumb.
its thumb mark meaning one print your thumb on soemthing and itl be caled a thumb mark or some one made a thumb mark that or surch thumb mark on google images.
The thumb is called a thumb instead of a finger because it is smaller than a finger. A thumb also has 2 joints and a finger has 3.
Your thumb is a lever because the joint that bends your thumb is a fulcrum.
The dorsum of the thumb is the back side of the thumb, or more simply put, the top of the thumb where the nail is located. It is the opposite side of the palm where the thumb pad resides.
I learned it was called a hitchhiker's thumb. its when your thumb is bent backward at the top.
thumb in Filipino: hinlalaki
He was as big as a my thumb.