Lens Holder for 50mm Diameter Lens or Mirror Item Type_Tongs Wood-based hydrostatic balance with two

Wood-based hydrostatic balance with two long pans and one short pan adjustable along a central column

supplied in a protective case so spare leaves stay flat and undamaged until installation

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

sized for color-coded bench wiring at the positive rail

5-inch hollow glass prism with a stopper

Lens Holder for 50mm Diameter Lens or Mirror Item Type_Tongs Wood-based hydrostatic balance with twoVersatile 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.