Pistonphone
​NC-72A

Standard sound source that generates a constant sound pressure of 
114 dB at 250 Hz.
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Sound Calibrator
​NC-75

NC-75 is the successor model of NC-74.
Compact and lightweight sound calibrator allows highly reliable and accurate measurement anywhere.
Sound pressure level: 94 dB ± 0.25 dB 
Frequency: 1000 Hz
For Type 1 and Type 2 sound level meters.

Calibration Exciter
​VE-10

For calibration of accelerometers and vibration meters on-site. 
Acceleration: 10 m/s^2 (RMS), 
Velocity: 10 mm/s (RMS), 
Displacement: 10 micro/m (RMS). 
Frequency: 159.2 Hz.
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