Spare Aluminum Leaves, 6 Each, Pack of 6

The Spare Aluminum Leaves by United Scientific are a pack of six replacement aluminum leaves for United Scientific's Flask Form Electroscope. The leaves hang in a pair from the alligator clip inside the flask and spread apart when the electroscope is charged, so fresh, uncreased leaves keep the deflection easy to see. Physics teachers keep them on hand to restore electroscopes between classes.