I've been exercised by the health brigade again, which seems to be waging a constant war on the responsible intake of refreshing alcoholic beverages, despite its stated aim of actually encouraging the responsible intake of alcohol.
Despite a recent study that showed we are consuming less alcohol than before, the forces of pious abstinence seem no less shrill, even though they should be kicking up their heels in joy at the reduction in consumption. They remind me of the words of the great historian Lord Macaulay on the subject of puritans: "The puritans hated bear-baiting not because it gave pain to the bear, but because it gave pleasure to the spectators."
Still, it behoves us as responsible imbibers of entertaining tinctures to be mindful that, in the current climate of anti-alcohol hysteria, it's best to try our best to remain on the side of the angels and pouring a decent measure is one way of doing that.
One of the great bartender tricks is to be able to free-pour a standard measure, without the aid of a measuring device. It's harder than it looks, especially as the size of a standard drink varies so much. Beer is easy to manage, since it comes in containers that are basically pre-measured. Wines and spirits, however, tend to come in the sort of measures that would be suicidal to attempt on your own.