Single-Phase Rheostat, Classroom Grade Lab Supplies_Classroom Eleven-ohm 5A air-cooled rheostat with

Eleven-ohm 5A air-cooled rheostat with constantan winding on a 300x44mm vitreous-enameled steel tube and a slide-bar carriage carrying a phosphor-bronze contact

sized for sustained workshop work where the smaller 25W and 65W irons can't keep heavy joints flowing solder

9-inch sizes for varied pour-transfer operations in chemistry and biology labs

large enough for whole-class visibility when tracing magnetic field lines around bar magnets

5 by 4-inch ventilation apparatus modeling historic mine-gallery airflow and domestic chimney convection through a candle-driven hot-air-rise demonstration

Single-Phase Rheostat, Classroom Grade Lab Supplies_Classroom Eleven-ohm 5A air-cooled rheostat withHundred ohm 1. 75A single phase rheostat with cover protected constantan winding on a 200x56mm tube and 4mm safety socket terminals, with plus or minus 10% nominal value tolerance.