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

and field magnet for direct observation as students trace how current produces rotation in a closed magnetic circuit

Student pulley demonstration set with a range of pulleys for mechanical-advantage and force-multiplication comparisons

with a clean linear pole structure for field-line mapping work

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.