| Giddings & Lewis, Inc., Sales Brochure for Cordax MeasureMax, 2 pgs., 1997. | 
                        
                            | Giddings & Lewis, Inc., Sales Brochure for Cordax Discovery Series CMM, 1 pg., 1997. | 
                        
                            | International Metrology Systems, Sales Brochure for Impact CMM, 6 pgs (no date available). | 
                        
                            | Slocum, A.H. Precision Machine Design., N.J., Prentice Hall, pp. 45-57, 1992. | 
                        
                            | Giddings & Lewis, Inc., Sales Brochure for Cordax, Coordinate Measuring Machines 6 pgs., 1994. | 
                        
                            | Giddings & Lewis, Inc., Sales Brochure for R-Series, Cordax Coordinate Measuring Machines, 6 pgs., 1995. | 
                        
                            | Mitutoyo, Sales Brochure (Bulletin No. 4430) for Coordinate Measuring Machines, 8 pgs (no date available). | 
                        
                            | Helmel, Advertisement for Checkpack CMM, 2 pgs, 1997. | 
                        
                            | Helmel, Sales Brochure for Microstar L Series, 2 pgs (no date available). | 
                        
                            | Helmel, Sales Brochure for PcMM, 8 pgs., 1993. | 
                        
                            | Helmel, Advertisement for Rambo RAM-Type CMM, 1 pg (no date available). | 
                        
                            | D.E.A., Sales Brochure for Scirocco CMM, 6 pgs., Mar. 1994. | 
                        
                            | D.E.A., Sales Brochure for Swift CMM, 6 pgs., Mar. 1994. | 
                        
                            | Brown & Sharpe, Advertisement for MicroVal Personal CMM, 1 pg., 1989. | 
                        
                            | Carl Zeiss, Inc., Sales Brochure for Zeiss Eclipse CMM, 2 pgs., Apr. 1, 1993. | 
                        
                            | Mitutoyo, Catalog No. US4135, BRT Series 191, CNC Coordinate Measuring Machines, 6 pgs (no date available). | 
                        
                            | Starrett, Bulletin No. 733, RGDC Series CMMs, 4 pgs., Aug. 1994. | 
                        
                            | Mitutoyo, Catalog No. US 4118 (2), FHN906 Series 322, CNC Coordinate Measuring Machine, 4 pgs. (no date available). |