Halogen Light Source for Optical Bench, 12V Entomology & Zoology_Zoology Models these aluminum 4-inch overflow cans

these aluminum 4-inch overflow cans come in pairs for paired-station Archimedes-principle and density investigations

5cm brass rotor balanced on three pairs of adjustable cast-iron pivots

and intestines

passing freely through the ring at room temperature but halted by the ring after flame heating expands the metal

the shorter focal distance lifting magnification for fine-print and specimen detail work

Halogen Light Source for Optical Bench, 12V Entomology & Zoology_Zoology Models these aluminum 4-inch overflow cansStand mounted halogen lamp rated 12V 21W, with a positioning lug rod that locates accurately on standard optical benches for lens, mirror, and refraction demonstrations.