Clear Interchangeable Dial for Demonstration Meter Material_PVC and a six-turn thick coil

and a six-turn thick coil for hands-on Lenz's law and induction-heating work

this 75mm metal-framed apparatus demonstrates thin-film interference and the wave nature of light

routing a single input between two alternative output paths to introduce circuit-control and signal-selection logic

5-inch funnels and adjusts up to 17 inches in height for the chemistry bench

and cervical spine across the same model for comprehensive head anatomy teaching

Clear Interchangeable Dial for Demonstration Meter Material_PVC and a six-turn thick coilUsed in laboratory apparatus that needs interchangeable rotary scale indicators, this clear dial provides a readable face for measuring angular displacement in physics setups.