US$ 12.19
Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns
designed for image-formation and focal-length investigation
and copper
25-inch Atwood machine with two 2-inch blue-plastic pulleys on an aluminum rod
237kg hooked masses for measuring spring extension under load and calculating spring constants
Lattice Support Clamps, 12.5mm Rods, 12-Pack Capacity_2000mL Plastic-bodied wave apparatus with eccentricPack of 12 metal lattice support clamps fitting rods up to 12. 5 mm in diameter, tightened with an Allen wrench for constructing lattice frameworks on laboratory benches.