Three antique boxwood double cup type measurers used by apothecaries and chemists.
The bigger one is a 5s and measures 11cm h x 5.5cm w. This size was used for making soda water in a Gasogene, the larger cup for bicarbonate of soda and the smaller cup for citric acid.    Price £50
The middle one is stamped 3s and measures 9.3cm h x 5.3cm w     Price £50
The rarest size is the small measurer 5.5cm h x 3.5cm w at the bigger end.   Price £85