Post office scales, columbus bilateral circa 1920s, set of 3

Beautiful vintage set of three postal office scales. Produced in czechoslovakia and used since 1920s at a post office to weight letters and packages. Pruduced by columbus bilateral company. Original, excellent condition of the scales. The scales are made in brass and other metals. Fully functional. Set of three scales looks amazing as a vintage interior accessory. Two of the scales are smaller (20cm) in height, one is larger (22cm). All three come from the same post office.