Check your brew level with the Beer Gauge

If you’ve ever received a short pour from a bartender or had a pint come to the table with the beer a full inch below the top of the glass, you know that it’s hard to not be annoyed.

Well, now you can find out exactly how much you’re missing, thanks to the Beer Gauge — a piece of cardboard that rests next to the lip of a standard U.S. pint glass and shows you how many ounces of liquid are actually in the glass and what percentage you’ve been shorted.

The Beer Gauge inventor, an engineer named Chris Holloway, tells The Wall Street Journal that he doesn’t think restaurants are trying to take advantage of customers but, rather, that there’s a design flaw in the pint glass itself.

The real issue here is not that bartenders or bars are trying to rip us off, it’s the poor design of a pint glass. If you want a full pint of beer, you have to have it filled to the very top.