US$ 42.48
7 oz with a threaded removable brass hook
safely grounding accumulated static charge during high-voltage demonstration work
Double-concave glass lens at 3-inch diameter and 200mm diverging focal length
a compact apparatus for introductory work on equilibrium and balance
Superior Thermal Conductivity of Metals Apparatus Capacity_17mL 7 oz with a threadedCopper, iron, aluminum, and brass strips fixed to a wooden ring with outer wax holding cups, demonstrating differential thermal conductivity by the order in which the wax melts.