Wooden Frame Abacus, 6 Steel Wires Chemistry_Molecular Model Sets this handle-fitted bicycle wheel lets

this handle-fitted bicycle wheel lets students feel torque resistance in a spinning mass

Hinged V-section arms grip lenses and mirrors up to 75mm in diameter

this regulated low-voltage DC power pack outputs a fixed +12V through front-panel terminals on the benchtop

3V 2A AC filament line for cathode-ray experiments

Five-piece giant wooden clothespin set sized at 7

Wooden Frame Abacus, 6 Steel Wires Chemistry_Molecular Model Sets this handle-fitted bicycle wheel letsWooden frame abacus on a 13. 5 by 9. 5 inch finished base, six steel wires carrying 20 beads each for hands on instruction in counting, place value, and basic arithmetic.