BEER TESTER

For the true and discriminating aficionado, a glass of the finest beer should only be partaken if it is the correct temperature. The subtle nuance of the melded grains..... The fragile and fleeting taste of the brewers art..... Can only be truly appreciated if that golden elixir is properly chilled.
To this end, advanced studies candidates in the Graduate Engineering Department of Michigan Tech have developed an easily used fully portable Beer Temperature Tester which easily indicates whether the beverage is acceptably chilled or not. To test the beer, simply insert the tester into the glass.

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After the tester has been immersed for a period of no less than fifteen seconds, remove both probes and observe the indication.

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The beer on the left is the correct temperature.

thanks to Mike Molloy