Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single Four-cylinder equal-mass set at 100g

Four-cylinder equal-mass set at 100g each in copper

Six-pack of polished stainless steel spatula-scoops with one rounded end and one pointed end

Selected through four rotary-switch decades from 0 to 11

Triple tandem plastic pulley with 25/38/50mm ball-bearing wheels on an open-sided 17

used to demonstrate capacitance and the discharge of stored static charge

Concave Glass Mirror, 50mm Diameter, 150mm Focal Length Pack Size_Single Four-cylinder equal-mass set at 100gConcave glass mirror, 50mm diameter and 150mm focal length, the f 3 curvature stretching the focal throw for demos that need the focal point set comfortably beyond the mirror face.