FLIR Scout Thermal Monocular

[SV Coronado]

I'm interested in buying an affordable thermal imaging monocular like the FLIR Scout. I'd like to have one for seeing in the dark, both while under sail and in a dark anchorage. My concern is a handheld unit will not have a useful range (perhaps <100 m).

I'd also like to use it for troubleshooting electrical and engine problems. For example, if I point it at an electrical panel, will it show a build-up of heat in one of the breakers?

Any advice from people that own or have used a thermal imaging monocular would be greatly appreciated!