(Kelly of the Clue Crew gives the clue from a lab.)  Stretch a balloon over a glass, secure with rubber bands, then place a straw on top & you have a simple version of this device that measures air pressure
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appeared... [DOC] [TLE] As it grows - Seattle Central Community College [PAR] qa qo abc ace act add ado aft age ago aid ail aim air ala alb ale all alp ami amp 
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coco... [DOC] [TLE] Archimedes to Hawking - Universitas PGRI Palembang [PAR] Buys-Ballot's Wind and Pressure Law, 1857.