an instrument or device for measuring the magnitude, amount, or contents of something, typically with a visual display of such information.
On some equipment, a visual sight glass or gauge shows fluid levels without opening the system, while on others a dipstick or other manual measuring device is used.
the thickness, size, or capacity of something, especially as a standard measure, in particular.
If you get a good tent, it's 60 gauges , about 130 pounds, it can take care of a family of five to seven throughout the winter, and you can have some items inside the tent that will keep the family warm.
the position of a sailing vessel to windward ( weather gage ) or leeward ( lee gage ) of another.
A ship sought weather gage of its enemy, so that it had freedom of maneuver, and could close if it wished.