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Organization of this manual
This manual describes the features and operation of the Pistonphone NC-72A.
The manual contains the following sections.
Outline
Gives basic information on the unit.
NC-72A Main Unit External View
Contains drawings that show the pistonphone from all sides.
Accessories External View
Contains drawings that show the supplied accessories.
Names of Parts and Functions
Identifi es and explains all parts of the unit.
Operation
Explains how to insert batteries, how to use the supplied adapters, and how to calibrate
a sound pressure measurement system (sound level meter).