Shot glass

A shot glass is a glass originally designed to hold or measure spirits or liquor, which is either imbibed straight from the glass ("a shot") or poured into a cocktail ("a drink"). An alcoholic beverage served in a shot glass and typically consumed quickly, in one gulp, may also be known as a "shooter" or “shot”.
Shot glasses decorated with a wide variety of toasts, advertisements, humorous pictures, or other decorations and words are popular souvenirs and collectibles, especially as merchandise of a brewery.
The word shot, meaning a drink of alcohol, has been used since at least the 17th century, taken from the Old English 'sceot' and is related to the German word Geschoss.
Some of the earliest whiskey glasses in America from the late 1700s to early 1800s were called "whiskey tasters" or "whiskey tumblers" and were hand blown. They are thick, similar to today's shot glasses, but will show a pontil mark or scar on the bottom, or a cupped area on the bottom where the pontil mark was ground and polished off. Some of these glasses even have hand-applied handles and decorations hand crafted using a grinding wheel.
In the early to mid-1800s, glass blowers began to use molds and several different patterns of "whiskey tasters" in several different colors were being made in molds. These glasses are also thick like today's shot glass but they will have rough pontiled bottoms from being hand blown into the mold. By the 1870s to 1890s as glass making technology improved, the rough pontiled bottoms largely disappeared from glasses and bottles.
A jigger, also known as a measure, is a bartending tool used to measure liquor, which is typically then poured into a glass or cocktail shaker.
The term jigger in the sense of a small cup or measure of spirits or wine originates in the U.S. in the early 19th century. Many references from the 1800s describe the "jigger boss" providing jiggers of whiskey to Irish immigrant workers who were digging canals in the U.S. Northeast.
The style of double-ended jigger common today, made of stainless steel with two unequal sized opposing cones in an hourglass shape, was patented in 1893 by Cornelius Dungan of Chicago. Typically, one cone measures a regulation single shot, and the other some fraction or multiple—with the actual sizes depending on local laws and customs.
In the U.S. up until Prohibition, a jigger was commonly known to be about half a gill, or 2 US fluid ounces (59 ml), but starting in the latter part of the 20th century, it is typically interpreted to be 1.5 US fluid ounces (44 ml). The jiggers used in the U.K. are typically 25 ml (0.85 US fl oz) and sometimes 35 ml (1.2 US fl oz). Jiggers may also hold other amounts and ratios, and can vary depending on the region and date of manufacture. Many jiggers may also have fractional markings on the inside of the bowl, to facilitate smaller measures of liquid.
A measuring shot glass is graduated in smaller units such as half-ounces, teaspoons, tablespoons, or millilitres. They are useful for precise measurement of cocktail ingredients, as well as in cooking recipes that call for multiples of a smaller unit (e.g. several teaspoons), allowing the dispensing of the amount in a single measure.