Jolly's Photometer for Optical Bench Subcategory_Power Supplies this life-size hanging skeleton model

this life-size hanging skeleton model features flexible spine and moveable joints for hands-on skeletal system instruction

Bobbin-wound transformer coil with 4mm panel sockets

hybrid electronic control unit

8mm rod attachment and a centered 50mm aperture together hold a lens square against an optical-bench rail for repeatable refraction

this foam-cut carrying case protects individual bones in molded slots sized to fit most full-size skeleton sets

Jolly's Photometer for Optical Bench Subcategory_Power Supplies this life-size hanging skeleton modelUsed to compare two light sources by sliding them until both faces of a paraffin block appear equally lit, this Jolly's photometer turns the inverse square law into a measurable observation.