US$ 399.50
with holes at 25mm intervals for hanging masses during torque
and material
and diatom preparations for microbiology and protist-identification work
Compact 200x44mm extended-range rheostat at 50 ohms and 2A
suited to fieldwork in geography units and orientation activities outside the classroom
92-Atom Molecular Model Set Subject_Physics with holes at 25mm intervalsNinety two atom molecular model set with hydrogens, carbons, nitrogens, oxygens, halogens, and gray metals at 30 50mm diameter, plus medium, long, flexible, turning, and short bonds.
US$ 399.50
US$ 1349.50
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