Molded Lens Holder on Base Subcategory_Dissection Equipment Wooden-framed abacus with two steel

Wooden-framed abacus with two steel wires of 20 beads each on a 13

Hard-plastic 13x13-inch Worcester circuit board with 12 metal poles and 4 banana terminals

with retractable hooks for tandem stacking during physics force experiments

the fixed mounts steadying each lens for repeatable refraction and image-formation experiments at student-station scale

this ray box gives students a controllable light source for reflection

Molded Lens Holder on Base Subcategory_Dissection Equipment Wooden-framed abacus with two steelMolded lens holder on a stable base, the upright clip steadying a single lens at the working height of a typical ray box or light source setup for consistent image formation work.