Chapter 29
Laws Derived from Isaiah: Running, Walking, Commerce, Measuring, Reading, Speaking
MEASURING AND WEIGHING ON SHABBATH AND YOM TOV
36. An experienced tradesman is also prohibited from estimating the weight of an item by picking it up in his hand, except in the following situation:
a. his purpose is not for trading, but for use at home, and
b. he does not hold weights in his other hand for comparison.
37.a. One must not weigh oneself or another person.
37.b. Similarly, one must not measure a person’s height or any of his other dimensions.
37.c. For the weighing of a baby when one has to know if it has gained after a feed, and how much, see Chapter 37, paragraph 5.

