Scales with arms of equal length
The Romans called this type of scales trutina. They have a hanging hook at the centre of the beam and weighing pans at each end - one for weights and the other for the material to be weighed.
The Romans called this type of scales trutina. They have a hanging hook at the centre of the beam and weighing pans at each end - one for weights and the other for the material to be weighed.