Articulating Lens
An infrared camera with an articulating lens or rotating optic provides significant ergonomic advantages over upright thermal imagers because are bio-mechanically easier to use over time.
The thermographer can hold the infrared camera at a comfortable height in a comfortable position and view the display from a suitable angle, regardless of the location of the object being observed.
Generally, professional grade cameras are designed for extended periods of use and so feature articulating optics.