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B&k pistonphone sound level calibrator general radio

* Bruel & Kjaer Type 4220 Pistonphone
* Bruel & Kjaer Type 4230 Sound Level Calibrator
* General Radio Type 1562-A Sound-Level Calibrator
* Bruel & Kjaer 4133-1/2" Cond. Free-Field
* Astro-Med (Grass Instruments) 10/Pak Platinum Subdermal Needle Electrodes
* Several "Mic Scales" 2A/2B, 4A/4B, 5A/5B, 6A/6B, 7A/7B, 8A/8B, 9A/9B, 10A/10B
* Various other parts and pieces
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