Jolly's Photometer for Optical Bench Subcategory_Power Supplies illustrating the high-ratio speed reduction

illustrating the high-ratio speed reduction and self-locking action of worm gearing

the optical glass producing undistorted views of specimens

and great vessels on a mounted base for cardiology and anatomy teaching

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

hybrid electronic control unit

Jolly's Photometer for Optical Bench Subcategory_Power Supplies illustrating the high-ratio speed reductionUsed 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.