US$ 19.99
Acrylic double-convex lens at 89mm with one clear face and one frosted
8-inch steel rod for weighted support of small-scale laboratory clamp assemblies
and 1g weights for use with balances and scales in teaching mass
carbon discs
and 10 crocodile leads for full-class circuit-building work
Herbalist Set with Glass Storage Tubes, Cylinder and Mortar and Pestle Included_Rod & Base Acrylic double-convex lens at 89mmBuilt for home apothecary and herbal preparation, this set pairs glass storage tubes, a graduated cylinder, and a mortar and pestle for kitchen to lab use.