Round Convex Glass Mirror, 75mm Diameter, 75mm Focal Length Capacity_17mL totaling 250 grams for suspension

totaling 250 grams for suspension from pulleys

the lower-cost benchtop alternative to the full-meter resistivity boards for quantitative R = rho*L/A and material-comparison investigations

Wider 70 x 20 x 8mm cross-section on this Alnico bar pair gives a broader pole face than typical bar magnets

Thirteen-piece mix of nine steel and four brass precision weights from 1 gram to 1 kilogram

Round Convex Glass Mirror, 75mm Diameter, 75mm Focal Length Capacity_17mL totaling 250 grams for suspensionDesigned for divergence demos at scale, a 75mm aperture convex glass mirror at 75mm focal length and ~2. 8mm thickness produces reduced virtual images with a notably widened apparent field.