Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner verifying the Boolean disjunction operation

verifying the Boolean disjunction operation by direct observation

providing the standard mid-reach branching wire for 4mm-socket student bench circuits

Extended two-inch fingers on this vinyl-coated three-finger clamp provide deeper reach into apparatus assemblies

High-tension power supply driving spectrum and discharge tubes in atomic spectra and gas discharge demonstrations for advanced physics classrooms

and nucleus for single-celled organism anatomy teaching

Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner verifying the Boolean disjunction operationAluminum bodied single pulley in a 3. 5 by 2 inch metal frame with a centered 2 inch wheel and one hook, sized to suspend from a stand for mechanical advantage experiments.