D&B Key Business Ratios - Provides financial ratios and statistics arranged by SIC code. Published by Dun & Bradstreet.
First click Continue towards the bottom right to get the Key Business Ratios page. Enter a code into either the SIC or NAICS box. After 1 digit has been keyed a drop down box will provide a list of industires to chose from. (The page defaults to SIC 1 = Agricultural Production - Crops)