1 Samuel 13:21
It cost a pim to sharpen a plow blade or a hoe. It cost a third of a shekel to sharpen a pitchfork or an axe. It cost a third of a shekel to put a new point on a stick for driving oxen.
1 Samuel 13:21, Readable English Bible (READ)
Note: A pim was about 1/4 ounce (8 grams) of silver. A third of a shekel was about 1/8 ounce (4 grams).