Brass Slotted Mass Set with Hanger, 8 x 25g Graduations_Ungraduated Demonstrates the polarity-sensitive forward-bias behavior

Demonstrates the polarity-sensitive forward-bias behavior of a light-emitting diode on a base with two 4mm terminals

supporting medical and health-science teaching

200ns sweep

5mA DC interchangeable scale on a 315x115mm laminated panel with integrated shunt

Heavy 150 x 25 x 15mm Alnico U-shape with clearly marked poles and a keeper bar

Brass Slotted Mass Set with Hanger, 8 x 25g Graduations_Ungraduated Demonstrates the polarity-sensitive forward-bias behaviorBrass slotted mass set combining eight 25 gram masses with a 25 gram hanger, stacking securely for force, pressure, and torque work in physics classrooms and balance calibration routines.