Concave Glass Mirror, 75mm Diameter, 150mm Focal Length Pack Size_14 Class-visible 12-inch demonstration meter with

Class-visible 12-inch demonstration meter with magnetically damped moving coil and Perspex front-and-back panels

overhead spring

closing the circuit only while the button is held to introduce momentary-contact behavior alongside latched switches

and brainstem for neurology

suited to bench-scale magnetism work where space is tight or where weaker field strength is required

Concave Glass Mirror, 75mm Diameter, 150mm Focal Length Pack Size_14 Class-visible 12-inch demonstration meter withConcave glass mirror at 75mm diameter and 150mm focal length on a ~3mm thick blank, the f 2 geometry balancing throw and magnification in introductory reflector optics.