Extended-Range Rheostat, 200 x 44mm, Model B Biology_Health & Genetics this wooden simple-machine model lets

this wooden simple-machine model lets students measure input effort against output splitting force at different wedge angles

the optical-grade body delivering cleaner refraction angles than acrylic peers for precision Snell's law work

and magnetic-property variations

telophase — progress across this plant mitosis model for cell division teaching in biology courses

Extended-Range Rheostat, 200 x 44mm, Model B Biology_Health & Genetics this wooden simple-machine model letsCompact 200x44mm extended range rheostat at 50 ohms and 2A, the smaller tube counterpart to the 300x44mm standard rheostats with the same constantan winding construction.