scaler

from WordNet (r) 3.0 (2006)
scaler
    n 1: an electronic pulse counter used to count pulses that occur
         too rapidly to be recorded individually
    
from The Collaborative International Dictionary of English v.0.48
Scaler \Scal"er\, n.
   One who, or that which, scales; specifically, a dentist's
   instrument for removing tartar from the teeth.
   [1913 Webster]
    

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