Bass Pro Shops
http://www.basspro.com/servlet/catal...ENT_FISHSCALES

Cabela's
http://www.cabelas.com/cabelas/en/te...ainCatcat20166

Probably about a hunnerd other fish tackle related sites out there on the 'net have scales. As a side note, folks in certain fishing circles view digital scales as being notoriously inaccurate. But then, these are generally folks that might have hundreds of dollars riding on fractions of an ounce. The spring type are best and generally, the more expensive the spring type scale, the tighter the tolerances and more accurate.