"St. Louis, MO.-- completed machine gun and rifle cartridges get their semi-final graduation test on a miniature merry-go-round called a 'gage and weigh' machine, shown here. Each of the 'spokes' of this carousel for cartridges is a scale, delicately balanced with a weight sufficient to keep it horizontal if the cartridge is of standard weight. Otherwise, it is kicked off. If the cartridge finishes its ride, it gets the 'brass ring' and is ready for graduation--actual 'acceptance firing' in the Proof House of the Ordnance Plant."
