John Gill Commentary Proverbs 20:23

"Diverse weights are an abomination to Jehovah; And a false balance is not good." — Proverbs 20:23 (ASV)

Divers weights [are] an abomination unto the Lord (See Gill on Proverbs 20:10); which is here repeated for the further confirmation of it, and that it might be taken notice of and avoided; and perhaps this sin of using false weights and measures was common with the Jews;

and a false balance [is] not good ; in the sight of God; but an abomination, as in (Proverbs 11:1) ; nor is it good for men in the issue; for though they may gain by it at present, it will prove a loss to them in the end, since it will bring a curse on all they get.