Soda Glass Pneumatic Trough with Concave Base, 12 x 6 inch Subcategory_Scales and Balances deflecting a pivoting cobalt-steel compass

deflecting a pivoting cobalt-steel compass needle inside a rectangular conductor frame to show that current generates a magnetic field

suiting work with vacuum tubes and eudiometers

Spring-loaded for hands-free grip

Cut-away section on this chloroplast model exposes grana stacking

Integrated diaphragm beneath an 8-inch heart model contextualizes cardiac position within the thoracic cavity during combined respiratory and cardiac teaching

Soda Glass Pneumatic Trough with Concave Base, 12 x 6 inch Subcategory_Scales and Balances deflecting a pivoting cobalt-steel compassSoda glass pneumatic trough with concave base measures 12 inches diameter by 6 inches tall for gas collection over water.