Holder for Diffraction Objects and Slides with Spring Clips State_Solid and a month-labeled base for

and a month-labeled base for tracking orbital positions through the year

Life-size muscular skeleton model features painted muscle origins

pulley for force cord

Lamp-house assembly dimensioned as the matched replacement unit for optical bench and light-source apparatus when the original housing reaches end of life

75-inch plastic base with 4mm threaded sockets

Holder for Diffraction Objects and Slides with Spring Clips State_Solid and a month-labeled base forSpring clipped metal frame on a mounting rod grips gratings, slides, and small diffraction objects in the optical bench beam path for repeatable interference and diffraction work.