QUICK! Answer this question. What portion size are your shot glasses?

Many bar owners are shocked to find out that what they thought were 1-ounce shot glasses, jiggers or portion pourers were in fact 1-1/4 ounce. That innocent oversight means that for every 4 drinks your bartenders serve, 1 extra drink was added to your liquor costs.

The Shot Size Tester has quarter-ounce graduations from 1/4 to 2 ounces as well as five-milliliter markings from 10 to 50 ml so you can quickly and easily test the device your bartenders use to measure liquor shots.

You can also use this measuring graduate to spot-check the size your bartenders are pouring in bars that have free pour spouts on the liquor bottles. They may be intentionally overpouring to solicit bigger tips.