16.5" Inclined Plane Simple Machine Model Chemistry this plant cell model shows

this plant cell model shows organelle ultrastructure and cell-wall layering for upper-level cell biology teaching

Four-metal 32mm density cube set with hooks in brass

a battery-free source of partial vacuum for bell-jar demonstrations without external power

Needle valve and flame stabilizer add precision control to this nickel-plated micro Bunsen burner running on natural gas for small-flame work

Microwavable and autoclavable

16.5" Inclined Plane Simple Machine Model Chemistry this plant cell model showsSixteen and a half inch wooden inclined plane with a paired cart, demonstrating mechanical advantage as the angle of incline changes the effort needed to roll the cart up the slope.