Regulated AC/DC Power Supply, 6V/12V 10A Glass Bottles_Reagent Bottles this plug-type resistance box lets

this plug-type resistance box lets students see the switching action of each decade

accepting vertical support rods up to 5/8 inch on standard laboratory stands

and coil wire with step-by-step assembly instructions

Designed to make turns-ratio behavior tactile

Compact 300mm black lead with a 2mm banana plug at one end and a crocodile clip at the other

Regulated AC/DC Power Supply, 6V/12V 10A Glass Bottles_Reagent Bottles this plug-type resistance box letsSwitchable 6V 12V regulated AC DC bench supply rated at 10A with overload protection, thermal cutoff, and an LED overload indicator, running on 220 240V mains for laboratory experiment work.