Regulated DC 0-30V 2A Power Supply with AC 1-6V Output and Digital Display Lab Supplies_Tongs 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

and a Perspex cylinder

exhaust gas analyzers

allowing a sodium or filament lamp to be aimed precisely onto a spectrometer slit or refraction-cell setup

Greatly magnified Paramecium model reveals cilia arrangement

Regulated DC 0-30V 2A Power Supply with AC 1-6V Output and Digital Display Lab Supplies_Tongs Eleven-ohm 5A air-cooled rheostat withRegulated 0 to 30V DC bench supply at 2A with a dual digital display for voltage and current, plus a 1 to 6V AC output, suited to electronics and physics laboratory instruction.