BRUEL & KJAER TYPE 2204 Precision Sound Level Meter *Untested* Free Shipping! $199.99 - PicClick
I've come across a suitcase full of Bruel & Kjær gear. It even comes with papers detailing a calibration process and an inventory card. The mic itself is missing. See pictures. I
Bruel & Kjaer Type 2204 Precision Sound Level Meter w/ Set | eBay