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

Vinyl-coated three-finger jaws hold apparatus up to 3

and chamber walls at a scale visible for group demonstrations

Four vinyl-coated prongs grip flasks and burettes up to 4

Studies oblique collisions between steel balls on a flat surface

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.