Scales with arms the same length and sliding weight
These scales fall within the "rider" category and have an eye for hanging in the centre of the beam and an acorn-shaped weight. This slides along half the beam which is marked with equidistant points corresponding to submultiples of the weight. Pans hang on chains (partially restored) at each end of the beam. Their small size and the possibility of weighing small quantities suggest these scales served pharmaceutical or cosmetic purposes.