Application: Installation, debug and repair for refrigeration industry, ventilation duct, environment monit-or, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire department. - Update: 2011-10-09

Application: Installation, debug and repair for refrigeration industry, ventilation duct, environment monit-or, navigation measurement, weather forecast, collection of the weather datum for outdoor busywork and fire department. - Update: 2011-10-09

Any cases to measure the rotational speed of a rotating object and to inspect the defect on its surface without the need to adhere any mark to reflect the light, and thereby without the need to halt the object from its rotation. - Update: 2011-10-09