This educational kit contains materials and instructions suitable for safe hands-on inquiry-based experimentation into the nature and properties of air pressure. This kit is primarily aimed at students in Middle School but may be used by Elementary or High School students by slightly altering the instructions. This kit may be used by one student, a group of three to four students, or in combination with other kits as a full classroom exercise. Instructions are also included for Science Fair activities. Kit consists of one of each Equilibrium Tubes, Spouting Cylinder, Demonstration Aneroid Barometer, Aneroid Barometer and Venturi Tube.