Plano-Cylindrical Lens, +10 Diopter State_Solid holding twelve tubes up to

holding twelve tubes up to 22 mm diameter for classroom and professional bench setups

Handmade wooden spice rack holds twelve 6-inch borosilicate glass test tubes with caps and includes a filling funnel for kitchen-to-lab cross-over gifting

sized for stringing through small pulley systems or hanging pendulum bobs across multiple demonstration setups

Aluminum strip testing clamp with wing-nut fixing

110 ohms at 1-ohm resolution

Plano-Cylindrical Lens, +10 Diopter State_Solid holding twelve tubes up toPairs a 50 by 50mm plano cylindrical glass lens with +10 diopter optical power, focusing light along a single axis for astigmatism correction, line focus, and cylindrical optics demos.