In 1724 the mathematical and physical instruments were separated from the armory and other collections of the elector and stored in the newly established “Königliches Cabinet der mathematischen und physikalischen Instrumente” (royal cabinet of mathematical and physical instruments). Until 1746 this was the official name of the collection which concentrated on instruments for measuring length, temperature, weight, volume and time. Since 1728 the royal cabinet can be found in the Zwinger.