The Nor130 Series of Sound Level Meters are designed and manufactured to the latest sound level meter standards and comprises two products. The Nor131 is a Class 1 (precision) instrument whilst the Nor132 is designed in accordance with the less accurate Class 2 requirements. Both meters offer the same features with exception of the detachable preamplifier which is only available on the Nor131 version.

•Single measurement range
•Extremely simple operation
•Parallel LAeq and LCpeak
•Real-time octaves
•Large internal memory
•Clock synchronized measurements
•Single measurement range
•USB interface
•Allows use of microphone extension cable (Nor131 only)
•Large back-lighted display
•Complies to IEC and ANSI standards
•1/1 octave (optional)
•1/3 octave (optional)
•Statistical analysis (optional)
•Level versus time (optional)