http://www.jyinstruments.com/html/en/thermowell.html sealed System Industrial Thermowell This Industrial Thermowell is also same like bi-metal thermowell which is also used to protect the theremomter through exposing the media. This is used in HVAC, chill water, hot water lines and pipes.Industrial Thermowell http://www.jyinstruments.com/html/en/thermowell.html
Schaeffer Gauge A combination pressure gauge and diaphragm seal forming one unique instrument that used for low pressure corrosive media where diaphragm seal protection is needed. Process where low or high temperature will affect seal fill fluid.
For measuring gases, air, water and oils when equipment or processes require a panel mounted gauge. There is two quick hooks on both of the case side and have round and square plastic cases for choice.