Today in 1882, US Patent 268186 A was issued, an invention of George J. Gave, for his “Measuring Vessel.” There’s no Abstract, although in the description it includes these claims:

This invention relates to that class of measuring-vessels designed to automatically indicate from the outside the quantity of beer or other fermenting liquor as it is poured into said measuring vessels, the object being to save labor and material in the construction and render the vessels less liable to get out of repair.