Cirrus CR 171B Class 1 Sound Level Meter - Untested no preamplifier

3M Quest Technologies SoundPro Sound Level Meter - Calibrated and Working

Brunel & Kjær Type 2239 integrating sound level meter

Quest Technologies 1900 Type 1 Precision Integrating/Logging Sound Level Meter

01dB SOLO Sound Level Meter, Decibel Meter, Multifunctional Sound Level Meter

G.R.A.S. 26AK-S1 ½″ 40AN Mic Preamplifier – Rasmussen Sig Series, Lab Provenance

1pcs HS6298 Noise Statistical Analyzer Integral Sound Level Meter Decibel Meter

Varta NTI XL2 Audio and Acoustic Analyzer Sound Level Meter Battery *GUARANTEED*