Yes it works very well Snoopy, before I made the meter I couldn't hear the different tones from the Sov.With the meter the numbers tell me what I hear and have made the detector so much easier for me to learn. Since fitting I have got 3 Florins,2 shillings 6 sixpences 8 Threepence's heaps of pennies and halfpennies before the meter all I had was lots of pulltabs and ring pulls.best thing I did to the sovereign