Machinery, Industrial Parts & Tools HomeProductsMachinery, Industrial Parts & Tools Inquiry Save to Favorites GO :::::Sort::::: Name Date Added Popular ↑ ↓ Octave Band Filters Applications Engineering Control Studies Hearing Protection Evaluation Audiometric Test Booth Background Noise Evaluation Machine Performance Analysis Product Testing Research & Development Maintenance Inspections *Quest offers three octave band filter sets. All of these lightweight filters adapt easily to the mod-ular design of the entire Advanced Series of meters. The OB-300 combination 1/3 & 1/1 Octave Band Filter Set gives you a choice of measuring 33 one-third-octave bands of 11 standard full octave bands. The OB-300 will manually or automatically... Read More Inquiry Now Machinery, Industrial Parts & Tools Made in Korea Other Manufacturing & Processing Machinery Made in Korea Filters Made in Korea