Tap the record button in the lower right of the screen to switch to video mode. Tap again to start and stop recording. 3. To view the saved images/videos, tap on the thumbnail in the lower left corner (see figure 3.2.1). 4. Figure 3.2.1 Adding/Removing Measurement Tools At the bottom bar, tap to display measurement tool selections. Select to add a point of reference. Select to add a line (for hot spot and cold spot detection). 009 | EN