Analogue SPL Meter The meter precisely measures area noise and other sound levels. You can then use an equalizer to fine-tune your stereo or home theater system's audio response to match the acoustic environment. The meter's wide-range sound capture reads from 50 to 126dB SPL in seven ranges with slow or fast response for checking peak and average levels. Description & Use. Includes carry case. Battery required PP3 9 volt (not supplied). Price includes UK Carriage. Please contact for details of carriage outside the UK.