Fog machines are valuable wind tunnel flow-visualization tools, and this handheld version is the best we’ve created! This fogger is smaller in size than our previous models, with the same function of injecting fog streams into a wind tunnel to test the aerodynamics of objects such as drag racers. Our Fog Maestro is a cleanable unit that can be easily opened in order for students to wipe away any residue from hard-water minerals. You may find this version convenient as it operates without generator tubes. Includes the fogger unit and one bottle of fog fluid.