Jenoptik VARIOSCAN high resolution Series Manual page 30

Operation
Gallery of background images
The gallery function provides a thumbnail display of the thermograms
stored to the current storage medium (normally 9, after averaging: 10).
The thumbnail image of the current background image is indicated by a
white frame. Selection of background images is via the << / >> keys.
The ± key allows images to be marked/unmarked. Marked images
appear with a yellow frame.
By a double click, all background images are marked. A triple click
unmarks all background images.
Temperature values
Pressing this key opens the following window:
The various options of this menu are described below:
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