Lens Set with Supports, 42mm Diameter Biology_Microscopy sized for elementary lessons on

sized for elementary lessons on area

Aepinus capacitor with adjustable plates demonstrates electrostatic principles

producing water jets of varying distances to show how pressure increases with depth in hydrostatics

Lamp-house assembly dimensioned as the matched replacement unit for optical bench and light-source apparatus when the original housing reaches end of life

25 inch ceramic bar pair simplify pole identification

Lens Set with Supports, 42mm Diameter Biology_Microscopy sized for elementary lessons onLens set at 42mm diameter shipped with matching wooden supports, the fixed mounts steadying each lens for repeatable refraction and image formation experiments at student station scale.