Plano-Cylindrical Lens, +10 Diopter Item Type_Springs One-inch brass ball that threads

One-inch brass ball that threads onto a pendulum string as a heavier metal counterpart to aluminum or steel balls in mass-dependent periodic-motion investigations

The bulb is carried upon a metal stand which leaves it free to rotate about its horizontal axis

The topics covered on this board include: Fuel tank

Research-grade oxygen spectrum tube at 26cm with a 10cm central capillary

6-piece borosilicate glass delivery tube set features uniquely shaped tubes for gas transfer

Plano-Cylindrical Lens, +10 Diopter Item Type_Springs One-inch brass ball that threadsPairs 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.