| Business | Phone |
| Ron Smith Surveying 4180 Murray Rd Nw, Dover 44622 | (330) 343-4730 |
| Pyle Surveying 2269 Pyle Rd Nw, Dover 44622 | (330) 343-7226 |
| Newburn Surveying 3815 Boy Scout Rd Ne, Dover 44622 | (330) 602-2111 |
| Marker Engineering & Surveying 4862 State Route 516 Nw, Dover 44622 | (330) 343-3444 |