Brüel & Kjær 2204 Impulse Precision Sound Level Meter 1613 Octave Filter PARTS

Bruel & Kjaer Charge Amplifier Type 2635

Used Bruel Kjaer 1704-C-102 2-Channel Microphone Conditioner BK1704

Bruel & Kjaer Potentiometer for 2304 Level Recorder

UNTESTED Bruel & Kjaer Pistonphone Type 4220

Bruel & Kjaer Potentiometer for 2305 and 2307 Level Recorder

NASA Owned! Bruel & Kjaer 2609 Measuring Amplifier 20-20,000 Hz

Bruel & Kjaer B&K Connection Bar JP 0400 JP0400 octave filter 1613 plugin