Wetted Materials: 304 SSHousing Material: Series 300 SS.Lens: Glass.Accuracy: ±1%.Temperature Limits: Ambient: -40 to 392°F (-40 to 200°C).Dial Size: 2-1/2".Process Connection: 1/4" NPT.Resolution: Less than 2% of scale.Weight: 9.2 oz (260 g).