US$ 16.00
3125 inches across
demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope
Hinged V-section arms grip lenses and mirrors up to 75mm in diameter
Built on a leveled cast-iron base with a dual-angle polymer top
3V 2A AC filament line for cathode-ray experiments
Wooden Frame Abacus, 6 Steel Wires Chemistry_Molecular Model Sets 3125 inches acrossWooden 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.
US$ 16.00
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