US$ 27.00
Twelve-volt DC drive across two 600-turn coils delivers higher lifting force than 6V models
Rectangular casted metal case and polythene insulated lid with finger flap to facilitate removal & front glass window
25 x 2 x 1 inches with a sliding top
Diffraction grating mounted on a 90 x 40mm card slide
and a removable cord post
Steel Ball Bearings, 13mm, 10-Pack Waves & Oscillation_Wave Motion Twelve-volt DC drive across twoTen pack of 13mm precision machined steel ball bearings for projectile launchers, roller coaster simulations, and Newton's second law apparatus in mechanics experiments.
US$ 27.00
US$ 83.00
US$ 149.00
US$ 134.50