hp 3478A Multimeter

This is a very old 5.5 digit multimeter with first production in 1981 or early.  You can find this meter easily on ebay for $100 to $150 USD which is a real bargin for such a good multimeter.  I use this meter most often for voltage and current measurement.  For audio signal, this meter can easily give you a accurate AC level reading up to 100kHz.  I think this is the “must own” meter for diyer due to it low cost and high performance!  I have two of this.

HP 3478A Technical Data

Some internal photo of hp 3478A:  This is a well design and well built unit even it is a low cost version!

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