Mounted Color Filter Set, 7 Monochromatic + 1 Tri-Color Base_Octagonal One-meter wooden lever graduated in

One-meter wooden lever graduated in centimeters on a knife-edge fulcrum base

and small diffraction objects in the optical-bench beam path for repeatable interference and diffraction work

or general beverage service at home or the lab

supporting dental hygiene and pathology teaching

Platinum resistance thermometer with fine platinum wire wound non-inductively on a mica frame and soldered to copper leads

Mounted Color Filter Set, 7 Monochromatic + 1 Tri-Color Base_Octagonal One-meter wooden lever graduated inEight color filters cyan, violet, magenta, red, yellow, blue, green, and tri color sit in 2 x 2 inch plastic mounts with 1 x 1. 38 inch apertures for use against a ray box source.