Economy Ceramic Disc Magnet, 25 x 5mm Racks & Stands_Funnel Stands sized to mount alongside a

sized to mount alongside a tone generator for converting electrical signals into audible tones during sound-wave demonstrations

portable enough for mobile demonstrations of current-driven magnetic field strength

producing water jets of varying distances to show how pressure increases with depth in hydrostatics

adjustable via motor voltage to mimic temperature and float weight to mimic pressure

Economy Ceramic Disc Magnet, 25 x 5mm Racks & Stands_Funnel Stands sized to mount alongside aEconomy 25 by 5mm ceramic disc magnet, an individually stocked spare from the disc series for physics labs, craft use, and ad hoc experimental setups.