Lens Set with Supports, 42mm Diameter Biology_Microscopy Lamp-house assembly dimensioned as the

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

Thirteen nickel-plated steel forks spanning C 236Hz to C 512Hz at +/-5% accuracy

sized for elementary lessons on area

Aepinus capacitor with adjustable plates demonstrates electrostatic principles

providing the cleanest hand-operated way to make and break a circuit during early electricity instruction with stackable modules

Lens Set with Supports, 42mm Diameter Biology_Microscopy Lamp-house assembly dimensioned as theLens 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.