Copper-Iron Thermopile Lab Supplies_Tongs holding twelve tubes up to

holding twelve tubes up to 22 mm diameter for classroom and professional bench setups

For driving student-built electronics and optics circuits

this ten-piece brass hooked weight set pairs five 50-gram and five 25-gram pieces with retractable hooks on both ends

reconfiguring the demonstration meter as a low-voltage voltmeter for single-cell and battery-pack readings

and electromagnet to map mechanical/electrical/light/heat conversions

Copper-Iron Thermopile Lab Supplies_Tongs holding twelve tubes up toSeven junction copper and iron thermopile from four 130mm wires of each metal, the series arrangement amplifying the Seebeck voltage for radiant heat detection experiments.