Try: Somerset Walkers

Theyre website aint working, but they have the scales seen at race tracks, for about $600. Its not digital though.

Also these types are great, just need to build a stand for it and drill it in if wanting a cage put on too.
BR NEW PACKAGING COMPUTING PRICE ELECTRONIC 100KG SCALE - eBay Scales, Packing Accessories, Postage, Packing Supplies, Business, Industrial. (end time 21-Oct-08 18:38:16 AEST)