Why you can trust TechRadar We spend hours testing every product or service we review, so you can be sure you're buying the best. Find out more about how we test. Thermal Master DV2: 30-second reviewThe Thermal Master DV2 is a handheld thermal imaging monocular that the maker positions in different ways depending on which storefront is visited. On its own birdwatching page, it is billed as the first dedicated thermal camera built specifically for spotting birds and wildlife.Elsewhere in the same company's catalog, and on Amazon, it appears instead as a general-purpose thermal monocular for hunting, camping and rescue…