'Weighing' in the Bible

The food that you'll be eating is to consist of portions weighing 20 shekels, to be consumed daily at regular intervals.

"Now as for you, Son of Man, you are to go find a sharp sword and use it like a barber's razor. You are to cut your hair and beard. Then you are to take a weighing scale and divide your shaved hair into three parts.

The shekel is to weigh 20 gerahs. The mina is to be comprised of three coins weighing 20, 25, and fifteen shekels, respectively.'"