AGM Global Vision Thermal Targets Pack of 50 633150S1
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From OpticsPlanet
AGM Global Vision Thermal Targets Pack of 50 633150S1. The thermal targets use the natural light and work night and day and in all environmental conditions. These targets provide high clarity and detail. A passive thermal target works with no additional power source. To create the contrast image the target reflects thermal energy of the environment. So the cooler sky temperature reflects in the thermal target as in a mirror. Therefore the target appears cold in contrast to the warmer trees buildings etc. in its background. It is recommended to attach the target to a flat surface at an angle of ten or more degrees from vertical so that it reflects the colder sky.