SIGNS OF WEIGHTS.

P: pondo weight/pound if it is joined with the symbols of other weights which always signify the same quantity, and are not referred to other things.
P by itself: 1 libra pound.
)-( : 1 denarius a silver coin/weight.
z, or =, or ⊤ : 1 sextans a sixth of a pound.
zz, or = = : 1 triens a third of a pound, or 2 sextantes.
— : 1/2 of a sextans or 1 uncia ounce.
s: semis half a pound.