US$ 30.00
1 oz with a threaded removable hook
configurable as a heavy pendulum bob or a demonstration mass for Newton's-first-law setups
Hydra model on stand reveals tentacles
Wider-apex 30° x 75° x 75° glass wedge prism
Yellow Molecular Model Atom, 2.2cm, 2 Holes, 10-Pack Type_Puzzle Kit 1 oz with a threadedSulfur convention yellow two hole atoms in a 10 pack at 2. 2cm diameter, sized for two bonded sulfur centers in standard ball and stick molecular model kits.
US$ 30.00
US$ 19.20
US$ 31.30
US$ 21.11