| Business | Phone |
| A J Machine Inc 507 S Line St, Columbia City 46725 | (260) 723-5188 |
| Accu-Tool Inc 831 E Short St, Columbia City 46725 | (260) 248-4529 |
| Acme Industrial Maintenance 2380 E Cardinal Dr, Columbia City 46725 | (260) 248-9680 |
| Economy Machine Products Columbia City 46725 | (260) 396-2345 |
| Economy Machine Products Inc 8037 S Clark St, Columbia City 46725 | (260) 396-2308 |
| G & J Machine & Tool 3975 S Raber Rd, Columbia City 46725 | (260) 244-5999 |
| Jms Machine Inc 2380 E Cardinal Dr, Columbia City 46725 | (260) 244-0077 |
| Kilgore Manufacturing Co 2390 E 100 S, Columbia City 46725 | (260) 248-2002 |
| Landis Tool Grinding 2155 E Business 30, Columbia City 46725 | (260) 244-5030 |
| Lathe Specialties Inc 2299 E Business 30, Columbia City 46725 | (260) 244-3629 |
| Oak View Tooling 724 E Swihart St, Columbia City 46725 | (260) 244-7677 |
| Rick's Tool Co 406 Diamond Ave, Columbia City 46725 | (260) 244-6800 |