Thermal monoculars can be useful in a variety of situations during the day, including:
Spotting game in dense foliage
A thermal monocular can help detect the heat signatures of animals that might be hidden from view by vegetation.
Observing heat signatures on a distant object
A thermal monocular can be used to detect temperature differences in the environment and identify the heat signature of a distant object.
Detecting temperature differences in the environment
A thermal monocular can be used to identify areas of high or low temperature in the environment, such as hot spots on a building roof or cold drafts in a room.
Monitoring the condition of equipment
A thermal monocular can be used to detect overheating or other problems with equipment, such as motors or electrical components.
Search and rescue 搜
A thermal monocular can be used to detect the heat signatures of people or animals in need of rescue in a variety of conditions, including during the day.