US$ 15.00
3 glass displacement vessel formed with a heavy-duty body and integrated 1-inch spout
letting students measure rotational distance against linear advance to derive the mechanical advantage of the spiral
Spare pack of ten low-mass pith balls sized for the standard pith-ball electroscope
and lens-behavior studies
3D Wheat Monocot Flower Model with Longitudinal Section, 15 x 9.5 x 2.5" Size_16 Inch 3 glass displacement vessel formedLongitudinal dissection through this wheat flower model exposes lemma, palea, stamens, and pistil of monocot grass flowers for cereal crop botany teaching.
US$ 15.00
US$ 61.99
US$ 64.99
US$ 72.99
US$ 12.99
US$ 11.99
US$ 120.00