Hygrometers are designes to show the humidity in the atmosphere i.e. how much moisture is in the air

These instruments are accurate and do not require any maintainance or batteries

Ash 70mm dial with white face and gold coloured bezel

 

Mahogany 700mm dial with white face and gold coloured bezel

  

Apple with 54mm dial with gold coloured face and bezel

 

Ash with 80mm dial with gold coloured face and bezel

 

Apple with 54mm dial with gold coloured face and bezel

 

Mahogany with 90mm dial with gold coloured face and bezel

 

Laburnam with 54mm dial with gold coloured face and bezel