Small Student Anemometer Meters_Electrical 237kg hooked masses for measuring

237kg hooked masses for measuring spring extension under load and calculating spring constants

Wall-mounted Mason's hygrometer with two identical dual-scale thermometers — one dry and one kept wet via a water reservoir — calculating relative humidity from their paired reading difference

Copper-wound maximum flux coil with 200 turns at a 45 mm internal diameter

Used to trace the invisible shape of magnetic fields

and herbivore feeding adaptations for teaching

Small Student Anemometer Meters_Electrical 237kg hooked masses for measuringCorrosion resistant and sized for hand held use, this small anemometer measures wind speed during earth science fieldwork and classroom weather investigations.