Which device often is designed to have liquid enclosed in a glass tube ceilometer hygrometer thermometer radar

Thermometer is the device that is device often  designed to have liquid enclosed in a glass tube. The thermometer is a device that measures temperature or a temperature gradient. 
 A celiometer is to find the base of clouds 
A hygrometer is a device to find meteorological information 
A radar was a glass tube with a filament to broadcast a signal then be read. 

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