Elaterometer

from The Collaborative International Dictionary of English v.0.48
Elatrometer \El`a*trom"e*ter\, n. [Gr. ? a driver + -meter.]
   (Physics)
   An instrument for measuring the degree of rarefaction of air
   contained in the receiver of an air pump. [Spelt also
   {elaterometer}.]
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Elaterometer \El`a*ter*om"e*ter\, n.
   Same as {Elatrometer}.
   [1913 Webster]
    

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