WEIGTHS
ca: PESES
es: PESAS
Weigths are pieces of metal which are usually made in two shapes, round flat disks and round vertical columns. The flat ones (b) are designed so size-wise they fit one on top of the other. The vertical ones are kept in blocks of wood made to hold each piece separately (a & c). They are made so you can see if any piece is missing.
Read more about: Balance / Bean scales 
