bulding a 3 phase motor amp meter

[stallters]

I am building a small portable test meter for 3 phase motors. I want to monitor amperage on all 3 phases at the same time. I already have (3) clamp-on Mastech transducers that are designed to work with a multimeter on millivolt scale using either 1 Mv per amp or 10Mv per amp. I would like to use the largest LED or lighted LCD meter(s) Lightobject.com can supply. Can you help? Will I need a "amp" meter from you or a Mv meter ? I want to build this into a small enclosure I can mount to my roll around tool box.

Thanks,
Phil