dictograph definition

  • noun:
    • A telephonic tool for company or any other similar use, having a sound-magnifying product enabling the ordinary mouthpiece is dispensed with. Much use was made of it for overhearing, or even for recording, conversations for the intended purpose of obtaining proof to be used in litigation.
    • A telephonic instrument for workplace or any other similar use, having a sound-magnifying product enabling the ordinary mouthpiece to-be dispensed with. Much use has-been manufactured from it for overhearing, and for recording, conversations for the purpose of acquiring evidence for use in litigation.

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