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Kids Lab Doorbell Making Kit

Learn about electromagnetism and transforma metal screw into a magnetic hammer. Complete an electric circuit with it to construct this handy doorbell. Your child can use it in his or her room as a cool science gadget. Kit includes: Base board, bell, coil cover, l-shaped cover, hammer, coil adjuster, battery cover, miscellaneous hardware and detailed instructions. Also required but not included 2 AA batteries and a small cross head screwdriver. Completed doorbell will measure about 6.5". For ages 8 and up.

Catalog code BIYDOOR price $12.95
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