In uk.sci.weather on Thu, 23 Oct 2003 at 09:40:39, wrote :

And horribly inaccurate.

Personally, I've found that the quoted accuracy of +/- 1°C is about
right. Close enough for enthusiastic amateurs like myself (though I
don't use one for the monthly records I post here).

Personally I've found that any two of these units can disagree by 2 degrees
so I concur with you about the high level of inaccuracy

It's like the parable of the man with two watches...

'A man with one watch knows the time, a man with two is never sure.'
--
Paul Hyett, Cheltenham

Email to pahyett[AT]activist[DOT]demon[DOT]co[DOT]uk