| Business | Phone |
| Engler Machine & Tool Rr 1 Box 40a, Princeton 47670 | (812) 386-6254 |
| Goad Machine Works Inc Lake Rd, Princeton 47670 | (812) 385-8985 |
| Heritage Custom Fabricators Highway 64 W, Princeton 47670 | (812) 386-6281 |
| Wallace Precision Machining Rr 3 Box 6, Princeton 47670 | (812) 385-8509 |