Studio Monitors & Speakers
Digital Sound 8922
Digital Sound 8922, SPL Measuring Device, Hand device with Condenser-Microphone (spherical characteristic), Measuring range from 31.5 Hz to 8 kHz, Accuracy: +/- 1.5 dB, 6 Ranges in 10 dB-steps (30db up to 130db), A/C-weighting selectable, Max-Hold...
https://www.bizrate.co.uk/musicalinstrumentmonitors_speakers/digital-sound-8922-oid343906510.html