Comparing capabilities
Pedraça and Basto · material culture
Carrying and measuring in one container
The Museum’s inventory distinguishes two pieces made from sheet zinc: pitcher L 16 from Pedraça, holding 12 litres, and pitcher L 62 from Devesa, Basto, holding seven. Both measured and carried wine. The capacities belong to these objects, not to a universal measure. Comparing them shows why a container’s name alone cannot tell us how much it holds. The dimensions add a surprise: the 12-litre pitcher is 46 centimetres high and 16.7 in diameter; the seven-litre pitcher is shorter, at 34.5 centimetres, but has a diameter of 23.3. Greater width alone does not mean greater capacity. The inventory associates the first piece with Fátima Magalhães of Pedraça and the second with Álvaro Magalhães of Devesa. These are recorded owners, not attributions of craftsmanship. Their names help connect the objects with the people who preserved them.
Vamos experimentar?
- Draw two bars with the same scale, one with 12 units and the other with seven.
- Calculate the difference in capacity between the two pieces.
- Write the inventory numbers next to the bars to keep each measure connected to the right object.
A paper comparison without needing containers or drinks.
Open a história e os seus recursos →Sources of this proposal
- Basto Land Museum — Latoaria, Teresa Soeiro text and inventory of piecesConsultation/revision: 2026-11-07
My findings
An idea, a drawing or a question to go on.