Air-Cooled Rheostat, Model E Grade_Food Grade well suited to demonstrating the

well suited to demonstrating the force on a current-carrying conductor in a magnetic field

Cork-lined stainless steel safety flask tongs lock jaws around flask necks to prevent accidental drops during transfer of hot distillation vessels between bench stations

Steel keepers across the 50 x 12 x 8mm Alnico bar pair preserve field strength in storage between lessons

Higher-output 65-watt soldering iron with a wooden bakelite handle

Air-Cooled Rheostat, Model E Grade_Food Grade well suited to demonstrating theUsed to dissipate heat during sustained high current work, this air cooled rheostat carries a slide bar carriage on a vitreous enameled tube for variable resistance under thermal load.