I have a picture of our guide Ze’ve showing us a carob seed used as a unit of weight. We derive our word carat from this, though that is a later development.
Deu 25:13 Thou shalt not have in thy bag divers weights, a great and a small.
Deu 25:14 Thou shalt not have in thine house divers measures, a great and a small.
Deu 25:15 But thou shalt have a perfect and just weight, a perfect and just measure shalt thou have: that thy days may be lengthened in the land which the LORD thy God giveth thee.
This is one of the milder passages Jin this chapter…you can read the rest which includes this pithy verse..
Deu 25:10 And his name shall be called in Israel, The house of him that hath his shoe loosed.