Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner providing the standard mid-reach branching

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

the largest value in the demonstrator line for slow RC charging and high-energy capacitor-discharge work

verifying the Boolean disjunction operation by direct observation

LED-output photoelectric cell on a 3

and nucleus for single-celled organism anatomy teaching

Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner providing the standard mid-reach branchingAluminum 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.