'Weight' in the Bible

He took the crown of their king from off his head; and its weight was a talent of gold, and [in it were] precious stones; and it was set on David's head. He brought forth the spoil of the city, exceeding much.

When he cut the hair of his head (now it was at every year's end that he cut it; because it was heavy on him, therefore he cut it); he weighed the hair of his head at two hundred shekels, after the king's weight.

and Ishbibenob, who was of the sons of the giant, the weight of whose spear was three hundred [shekels] of brass in weight, he being armed with a new [sword], thought to have slain David.