A temperature gauge is a device that measures or indicates the level of hotness or coldness in something, such as in a room, oven, or car. Full definition
I wish the black interior would be more stain resistant and I wish an outside temperature gauge was included. (autolist.com)
Or is this just a consequence of riding in warm summer weather, and as long as the oil temperature gauge doesn't flip out I'm fine? (mechanics.stackexchange.com)
As one, we looked at the water temperature gauge. (automobilemag.com)