衡 (héng): to weigh; to measure

A doctor needs to weigh the dosage of the medicine; you can't just casually give the patient more to take.

When buying gold, the clerk will put the jewelry on a small scale and weigh it to see exactly how heavy it is.

Before cooking, Mom first weighed out the proportions of flour and sugar so that the cake would taste just right.

He weighed the two bags of rice in his hands and felt that the one on the left was clearly a bit heavier.

Before mailing a package, the post office staff will first weigh it, then tell you how much you need to pay.