The necessity of calibration is so important to fair trade that God commanded us over 3500 years ago to use accurate measurements. The following verses can be found in the Holy Bible:
The Providence of Metrology
You must be impartial in judgment. Use accurate measurements: lengths, weights, and volumes.
In all your transactions you must use accurate scales and honest measurements, so that you will have a long, good life in the land the Lord your God is giving you.
The Lord abhors dishonest scales, but accurate weights are His delight.
The Ten Commandments
Exodus 20: 1 through 17
You shall have no other gods before Me.
You shall not commit adultery.
You shall not make for yourself an idol...You
shall not bow down to them or worship them.
You shall not misuse the name of the Lord your God.
Remember the Sabbath day by keeping it holy.
You shall not murder.
You shall not steal.
You shall not give false testimony against
You shall not covet your neighbor's house.
You shall not covet your neighbor's wife.
Honor your father and mother.
New International Version
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