Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner Higher-range 30-0-30mA center-zero galvanometer at

Higher-range 30-0-30mA center-zero galvanometer at 20mA sensitivity and plus-or-minus 2

NPN transistor in a protective enclosure with labeled base

LED-output photoelectric cell on a 3

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

and nucleus for single-celled organism anatomy teaching

Single Pulley with 1 Hook, Aluminum Frame, 3.5 x 2" LabLearner Higher-range 30-0-30mA center-zero galvanometer atAluminum 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.