US$ 44.95
Twenty-centimeter steel helical spring paired with 2kg
Base-mounted 2-stroke diesel engine model in aluminum and plastic
heating the bar until it no longer passes through the opening and contraction returns it
and 6V-powered ignition light staging each step
Two-speed ticker timer kit printing 25 or 40 dots per second on paper tape via carbon discs
Stand for Alcohol Burner, 5 x 5 x 5" Material_Polypropylene Twenty-centimeter steel helical spring pairedChrome plated steel wire stand at 5 x 5 x 5 inches supports flasks and beakers above alcohol burners for classroom chemistry demonstrations.
US$ 44.95
US$ 1099.50
US$ 1449.50
US$ 1049.50
US$ 452.00