B&K UA0040 Probe Microphone Kit
UA 0040 Probe Microphone Kit consists of 4 probe tubes with 0.5, 1, 2, 4 mm outside diameters . For type 4134 1 / 2" microphones. A coupler is supplied for calibration of sensitivity and frequency response. Tools for cutting and materials for damping the probes are supplied . Used for sound measurements in inaccessible places .