Length of Thermometer probe for concial

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Well-Known Member
Nov 5, 2009
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Grand Haven
I have a minibrew 15 conical and looking to purchase a thermometer for it. I see many different probe length's and wondering which is most appropriate for fermenting in the plastic conical.

The minibrew website has one with 4 inch probe, but it does not list the brand. the face of the thermometer only says "hobby beverage," (the name of the minibrew website) so I am not sure of the quality.

One thing I do like is the the scale is 30-130*F which is easier to read than the scales that go to 250*F.

Anyone have any experience with the accuracy of this thermometer, and if 4 inches sounds like the correct length for a 15 gal fermenter?