Lens Holder for 50mm Lens with 8mm Rod Attachment Pack Size_8 dimensioned as the matched replacement

dimensioned as the matched replacement carriage for the LED ray box (PH0602ALED) track when an original rider is lost or damaged

Studies oblique collisions between steel balls on a flat surface

and pendulum period in physics experiments

Ovary model exposes cortex

Entry-level two-part human skull model separates the skull cap to reveal the cranial cavity for introductory head-anatomy teaching at secondary and college levels

Lens Holder for 50mm Lens with 8mm Rod Attachment Pack Size_8 dimensioned as the matched replacement8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical bench rail for repeatable refraction, focal length, and image formation experiments.