Copper Specific Gravity Cylinder with Hook Category_Lab Equipment providing the standard mid-range value

providing the standard mid-range value for current-limiting LEDs and dropping resistors in student circuits

Square-section aluminum tube 1 meter long with side graduations and four sliding riders

and protein separation across three selectable ranges (0-50V

showing that air resistance — not mass — accounts for differences in fall time under gravity

Copper Specific Gravity Cylinder with Hook Category_Lab Equipment providing the standard mid-range valueCopper 2 by 0. 5 inch specific gravity cylinder with a top hook for density and specific heat work, a distinctive density reference against the lighter aluminum and heavier steel cylinders.