Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner High-tension power supply driving spectrum

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

NPN transistor in a protective enclosure with labeled base

Black 3-inch circular disc 0

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

and nucleus for single-celled organism anatomy teaching

Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner High-tension power supply driving spectrumAluminum 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.