'Scaler' definitions:

Definition of 'scaler'

From: WordNet
noun
An electronic pulse counter used to count pulses that occur too rapidly to be recorded individually

Definition of 'Scaler'

From: GCIDE
  • Scaler \Scal"er\, n. One who, or that which, scales; specifically, a dentist's instrument for removing tartar from the teeth. [1913 Webster]