Accuracy is ±1% full-scale when stem is immersed 2″ in liquids or 4″ in gases (immerse models with a 2.5″ stem length 2″ in gases).
Measured stem length from the top of the threads to the bottom tip of the stem. Stem dia is 0.25″; threaded connection is 1/2″ NPT(M). All thermometers meet or exceed ASME B40.3 standards. Maximum environmental temperature for Acrylic lens thermometers is 200degF (93degC).