• Silicone-filled gauges provides for readability and long life in tough industrial environments. • Dampened movement• Anti-parallax dial for accurate readings• Hermetically sealed per ASME B40.3 standard to prevent fogging and protect against tough environments• Rugged 304 stainless steel construction with Acrylic lens• • Recalibrate using the external reset screw• For use in applications that do not exceeding 200F 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).|Discounts: Save 10% on 10-24 assorted thermometers, 15% on 25 to 49, and 20% on 50 or more.