Steel Extension Spring, 56 x 19mm Neck_Wide this thermistor mounts on a

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

producing more sinusoidal oscillation than a standard helical spring for SHM studies

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

this clear dial provides a readable face for measuring angular displacement in physics setups

Steel Extension Spring, 56 x 19mm Neck_Wide this thermistor mounts on a19mm 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.