Bimetallic Thermostat Switch Model Capacity_17mL Built for scrubbing narrow-diameter glassware

Built for scrubbing narrow-diameter glassware

Three-bob pendulum set with 1-inch brass

Adjustable mass on one fork shifts its 440Hz pitch by a few hertz

Dual metric and imperial markings on this PVC-coated fiberglass thirty-meter tape measure

Single-degree graduations and a non-magnetic plastic case allow this 100mm tangent compass to mount on any tangent galvanometer for precise direction-and-deflection readings

Bimetallic Thermostat Switch Model Capacity_17mL Built for scrubbing narrow-diameter glasswareVertical bimetallic strip thermostat model wired through binding posts and adjustable contacts, illustrating how differential thermal expansion makes and breaks a low current circuit.