Object Needle for Optics Experiments Included_Stopcock Discontinued bench instrument with continuously

Discontinued bench instrument with continuously variable 0-30V DC at 2A plus stepped 1-6V AC in 1V increments

Graphite lattice kit whose atoms and connecting rods assemble into planar carbon sheets

the bench-scale option for younger students or for compact apparatus where a full-size bar would be unwieldy

sized for small-group demonstration without magnification

Hand-operated vacuum pump with a 200mm copper pump plate and rubber seal

Object Needle for Optics Experiments Included_Stopcock Discontinued bench instrument with continuouslyUsed to position a fine point object on the optical bench, this 80mm steel needle in a 6mm rod doubles as a precise alignment reference for image formation and ray tracing setups.