Eisco Labs Electric Bell with Banana Plug terminals 4-6V AC/DC Base Size_11 x 11" 150-spring assortment mixing compression and

150-spring assortment mixing compression and extension types

and diffraction experiments to additional geometries

drawing 4-6V DC through 4mm sockets for current-versus-lift-force investigations

the chrome-plated metal frame giving the reading magnifier durability across repeated student handling

ovary chambers

Eisco Labs Electric Bell with Banana Plug terminals 4-6V AC/DC Base Size_11 x 11" 150-spring assortment mixing compression andEisco Labs Electric Bell with Banana Plug terminals which utilizes 4 6V AC DC power. Metal bell with ringer, with Plastic shroud Diameter of bell is approx. 2. 75" Full unit measures 5. 25" x 2. 75" Power supply NOT included Eisco Labs Electric Bell with Banana Plug terminals which utilizes 4 6V AC DC power. Power supply is NOT included. Diameter of bell is approx. 2. 75" Full unit measures 5. 25" x 2. 75"