The Hampden MODEL H-6910-12A Wind Tunnel has been designed to provide the fundamental air flow facilities necessary to perform any of the H-6910-12A Series Wind Tunnel Experiments. It can generate air speed 0 – 150 MPH (0 – 13,200ft/min) and has a 12" square test section. The unit is equipped with a bench, control panel, wind tunnel including an inlet cone, clear experiment section, outlet cone and screen, manual traverse unit, linear track with carrier, main AC circuit breaker, and variable frequency drive. The bench includes a shelf and is mounted on eight casters. MODEL H-6910-24-CDL Wind Tunnel (Shown with Control unit and close up of Race Car Option) Dimensions: 9' High x 29'-8" Wide, 8' Deep Fully equipped with: a bench, wind tunnel including an inlet cone, clear experiment section, outlet cone and screen, and CDL option. Control Unit with: main AC circuit breaker, variable frequency drive. The bench is mounted on levelers and includes a storage shelf. The manual traverse unit is mounted on the carrier that rides along the table rail which includes a scale calibrated in millimeters. The manual traverse unit is used to position an air probe in the experiment section and is capable of both linear and rotary positioning. The linear scale is 25 cm long with minor divisions of 0.2 cm and resolution of 0.02 cm if the vernier is used. The protractor is graduated in 2° steps over a full 360°. With the vernier, it has a resolution of 0.2° (the rotational range of the manual traverse unit is limited to 40° either direction centered around zero). Interchangeable mounting collets are provided for locking probes firmly in place without damaging them. The mobility of this unit makes it suitable for either a lecture hall demonstration or laboratory work.