Steel Extension Spring, 56 x 19mm Neck_Wide accepting rods up to three-quarters

accepting rods up to three-quarters of an inch for positioning apparatus at any angle

this premium calorimeter delivers accurate specific-heat and heat-of-reaction measurements

Student pulley demonstration set with a range of pulleys for mechanical-advantage and force-multiplication comparisons

this thermistor mounts on a transparent base with 4mm color-coded sockets and a printed circuit diagram for sensor-circuit student work

LPG Bunsen burner with an anti-tip cast iron base and adjustable air flow

Steel Extension Spring, 56 x 19mm Neck_Wide accepting rods up to three-quarters19mm diameter steel extension spring at 56mm rest length, stretching to approximately 290mm under load, sized for hands on Hooke's Law measurement with hanging weights.