• ID Code: I3-01
  • Purpose: Indicate air pressure.
  • Description: The barometer measures air pressure in the closed system; squeezing the bulb increases the air pressure. Pressure readings below ambient atmospheric pressure can be obtained by removing the tube and holding the bulb squeezed while replacing the tube.
  • Availability: Available
  • References: http://www.physics.umd.edu/deptinfo/facilities/lecdem/services/refs/refsi.htm#I3-01