Stool and Rubber Sheet (2B30.50)
/Stool_and_Rubber_Sheet_(2B30.50).jpg)
A square rubber sheet with an attached handle is set on top of a wooden stool or other heavy object. The weight of the sheet drives the air out from beneath it, and the air pressure on the outside holds the sheet and stool together. The stool can now be lifted by pulling up on the handle.