I have to give my Vortestern law. We were looking for the classics and initially pleased ... until it was time to back shaking. It remains easy. Since it is (few) somehow managed it seems significant manufacturing variations to geben.Unser thermometer is absolutely schüttelresistent: - (( Supplement: the thermometer at Amazon have just complained, the lady on the phone was very nice, I get the purchase price without returning refunded. I remain a loyal customer at Amazon, for an unsuitable product copy can also nothing!