Precision sound level meter
- Brüel & Kjær (Sound and Vibration Measurement) A/S
Precision sound level meter type 2203 serial no.105252, fitted with one-inch condenser microphone type 4145 serial no.436055, made in Denmark by Bruel & Kjaer, Copenhagen, nominal range 10dB to 130dB on rotary switch and -10db to +10db on meter (glass of meter dial cracked)
- Object Number:
- sound-level meter
- furnishing and equipment
- measuring device - instrument
- Civil Aviation Authority. Chief Scientis
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