Silicon Tubing, 5 x 1mm Safety Supplies_Eye Protection 5mm) and two copper wires

5mm) and two copper wires (0

Sprung-tip jockey contact slides smoothly along the resistance wire of a Wheatstone bridge or potentiometer to find the null-deflection balance point during student-built bridge experiments

3 glass provides sterilizable vessels for biology

Pole gap on this Alnico U-shape concentrates the field strongly enough to drive a Lorentz-force motor demonstration or to anchor a swinging-pendulum eddy-current setup

Silicon Tubing, 5 x 1mm Safety Supplies_Eye Protection 5mm) and two copper wiresAutoclavable and inert, silicon tubing in a 5 by 1 mm profile supports biology laboratory runs where cross contamination between experiments matters.