Single-Phase Rheostat, Classroom Grade Lab Supplies_Classroom Four-cell D-size holder in unbreakable

Four-cell D-size holder in unbreakable plastic with curved retention sides

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

and follicles on a mounted base for dermatology teaching

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

Single-Phase Rheostat, Classroom Grade Lab Supplies_Classroom Four-cell D-size holder in unbreakableHundred 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.