| Business | Phone |
| Mitutoyo America 45001 Five Mile Rd, Plymouth 48170 | (734) 459-2810 |
| Mitutoyo America Corp 45005 Five Mile Rd, Plymouth 48170 | (734) 455-9330 |
| Motor City Mold 14875 Galleon Ct, Plymouth 48170 | (734) 354-1380 |
| Rosemont Measurement 46200 Port St, Plymouth 48170 | (734) 254-0295 |