Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner NPN transistor in a protective

NPN transistor in a protective enclosure with labeled base

Universal regulated AC/DC power supply combining a 0 to 5V adjustable DC rail

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

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

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

Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner NPN transistor in a protectiveAluminum 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.