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

totaling 250 grams for suspension from pulleys

this decade resistance box substitutes for fixed resistors in circuit experiments

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

Magnetic-base pulley with a 50mm ball-bearing plastic wheel

producing a smaller flame footprint suited to individual student work on crowded benches

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.