Ray Box with Magnetic Base, 12V 21W Lab Supplies_Thermometers Hand-painted 4-part human brain model

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

running as either water turbine or motor-driven pump for fluid-based energy-conversion work

slotting inline with other modular demonstrator components

suiting work with vacuum tubes and eudiometers

slide valve

Ray Box with Magnetic Base, 12V 21W Lab Supplies_Thermometers Hand-painted 4-part human brain modelMagnetic base anchors the metal cased unit to benches and steel boards, while variable focus produces five parallel beams that a shutter masks selectively. Ships with a 12V 21W bulb.