Do not have two differing measures in your house—one large, one small.
OJBThou shalt not have in thine bais differing eifah (measures), a gedolah and a ketannah.
Onkelos (Etheridge)Thou shalt not have in thy house measure and measure, great and small:
T4T[25:13–14]“When you are buying or selling things, do not try to cheat people by having two kinds of weights, one which you use when you buy something and one which you use when you sell something, and two kinds of measuring baskets, one which you use when you buy something and one which you use when you sell something.