The Casella 120/1 Class 1 dual Level Sound Noise Calibrator is a high-quality tool used for accurate sound level measurements. With the ability to produce sound levels of 94 dB and 104 dB, this calibrator is essential for ensuring precise measurements in various industrial, business, and office settings. The Casella brand is known for its reliable and durable products, making this sound noise calibrator a trustworthy choice for professionals in the field of testing, measurement, and inspection.