12V DC Hand Crank Generator with Light Bulb Biology_Dissection Seventy-times enlarged skin cross section

Seventy-times enlarged skin cross section reveals epidermis

Neoprene Bunsen burner hose sized to fit 8-10 mm gas-inlet connectors

Chrome-plated steel wire stand at 5 x 5 x 5 inches supports flasks and beakers above alcohol burners for classroom chemistry demonstrations

mechanical-advantage

the numbered dicot leaf model on a base maps epidermal

12V DC Hand Crank Generator with Light Bulb Biology_Dissection Seventy-times enlarged skin cross sectionHand cranked 12V DC generator in a clear plastic case with a front mounted lamp and binding posts, demonstrating mechanical to electrical energy conversion as the crank lights the bulb.