| Business | Phone |
| A & Z Engineering Llc 3480 Stellhorn Rd, Fort Wayne 46815 | (260) 485-7077 |
| B & B Enterprises 7808 Us Highway 30 W, Fort Wayne 46818 | (260) 625-6362 |
| Custom Engineering 1631 E Pontiac St, Fort Wayne 46803 | (260) 745-9299 |
| D G Engineering Inc 4127 Rosewood Dr, Fort Wayne 46804 | (260) 432-3793 |
| Degreasing Engineers Inc 9721 Rio Canyon Ct, Fort Wayne 46825 | (260) 483-2612 |
| Duesenburg Inc 3015 Charlotte Ave, Fort Wayne 46805 | (260) 496-9650 |
| Eastern Engineering Supply 1203 Webster St, Fort Wayne 46802 | (260) 426-3119 |
| Integrated Micro Technologies 5323 Sherington Rd, Fort Wayne 46814 | (260) 432-2125 |
| Vee Engineering 1615 Lumbard St, Fort Wayne 46803 | (260) 422-1874 |
| Peters Broadcast Engineering 426 W Ludwig Rd, Fort Wayne 46825 | (260) 490-8500 |
| Primary Engineering Inc 3844 New Vision Dr # B, Fort Wayne 46845 | (260) 918-1419 |