The Sound Level Meter is a piece of equipment used by Egon Spengler and Ray Stantz during the detection phase of an investigation.


Ray is shown using it while going into the Orrefors crystal store. During the battle against Vigo on New Year's Eve, Egon used the Sound Level Meter to confirm that Vigo was still in the Manhattan Museum of Art.


Like the Giga Meter, it appears to be an alternative to the P.K.E. Meter and measures an entity's unique frequency.


Ghostbusters II


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