Working Steam Engine Model with Piston and Slide Valve Stock Type_Stocked wave monitor

wave monitor

an Erlenmeyer flask

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

Miniature desktop torso with 12 removable parts includes a dissectable head and brain for compact classroom anatomy and biology teaching

and vascular cylinder for plant anatomy and absorption teaching

Working Steam Engine Model with Piston and Slide Valve Stock Type_Stocked wave monitorCutaway working steam engine model with piston, slide valve, and link motion reversing mechanism, the flywheel light enough to drive by breath for hands on reciprocating engine study.