EXHIBIT 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-137686 on Form S-8 of our report dated June 22, 2007, appearing in this Annual Report on Form 11-K of EMED Co., Inc. 401(k) Plan for the years ended December 31, 2006.

/s/ DELOITTE & TOUCHE LLP

Milwaukee, Wisconsin
June 28, 2007