Air-Cooled Rheostat, Model E Foodsafe Unfinished wood pipette rack holds

Unfinished wood pipette rack holds 12 pipettes vertical in a 14

sized to drop different loads into a circuit without rewiring

freezing ripple-tank patterns into stable

the microfarad-bridge decade for RC-time-constant work and audio-frequency timing circuits

Pink-dotted ends and steel keepers across this 50 x 12mm Alnico cylinder pair simplify pole identification while the keepers preserve field strength during cardboard-box storage

Air-Cooled Rheostat, Model E Foodsafe Unfinished wood pipette rack holdsUsed 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.