EXHIBIT 4 LOAN AGREEMENT BETWEEN BANK ONE, NA AND THE BADGER METER EMPLOYEE SAVINGS AND STOCK OWNERSHIP PLAN AND TRUST Bank One, NA, with its main office in Chicago, Illinois (the "Bank") and the Badger Meter Employee Savings and Stock Ownership Plan...Loan Agreement • August 1st, 2003 • Badger Meter Inc • Totalizing fluid meters & counting devices • Wisconsin
