PIRA Classification: 2C20.10
Description: An air supply is connected to three tubes via a common pipe. The pipe connected to the middle tube is constricted. When the air is turned on, the water in the tubes rises to different levels, depending on the pipes diameter.
Special Instructions: Don't turn on the air too high or water will blow out of the tubes.
Condition: Good
Setup time: 1 minute
Safety Issues: None