Lens Holder for 50mm Diameter Lens or Mirror Item Type_Tongs and polished faces

and polished faces

Stand-mounted force pump illustrating positive-displacement fluid transfer against gravity

sized for color-coded bench wiring at the positive rail

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

a 50mm double-convex glass lens spanning 300-1000mm focal lengths gives projection-style optics setups a single range-rated element

Lens Holder for 50mm Diameter Lens or Mirror Item Type_Tongs and polished facesVersatile holder accepting either a 50mm diameter lens or mirror, the dual purpose mount giving optics setups one fewer accessory to track across reflection and refraction experiments.