Specification Brand : EISCO BulletPoint1 : Clear plastic frame holds both tubes one aluminum and one clear plastic. Frame measures approx. 12.5 " tall. BulletPoint2 : Comes with Magnets and Dynamometer 2.5N / 250g BulletPoint3 : Introduces many concepts including Faraday's Law, Eddy currents, and of course Lenz's Law BulletPoint4 : Comes with Experiment Guide BulletPoint5 : Excellent hands on demonstration ExternallyAssignedProductIdentifier1 : 0849230063351 ExternallyAssignedProductIdentifier2 : 849230063351 ItemName : Eisco Labs Lenz's Law Kit ItemPackageDimensions_Height : 5.588 centimeters ItemPackageDimensions_Length : 35.306 centimeters ItemPackageDimensions_Width : 15.494 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-education-magnetism-kits Manufacturer : EISCO Material : Plastic ModelNumber : MGFD03 NumberOfItems : 1 PartNumber : LZLWKIT ProductDescription : The Lenz's Law Kit provides the necessary tools to discover concepts involving Farady's Law, magnetism, and eddy currents in addition to the Lenz's Law. The pipes of differing materials excel at demonstration the magnet braking force in action as the two magnets are simultaneously dropped through each of the aluminum and clear plastic tubes. A dynamometer attaches to suspend the Lenz's Las apparatus so students can quantitatively measure the additional force as the magnet drops through the conductive tube.