| Business | Phone |
| Dimensional Certification Inc 1009 E 10 Mile Rd, Madison Heights 48071 | (248) 547-7242 |
| Optical Measurements Inc 32801 Dequindre Rd, Madison Heights 48071 | (248) 588-1980 |
| Michigan Measurement Svc 345 W Girard Ave, Madison Heights 48071 | (248) 577-1886 |
| Castellani Building & Inspectn 612 Tanglewood Dr, Madison Heights 48071 | (248) 658-6022 |
| Reese Inspections & Sorting 1703 E 10 Mile Rd, Madison Heights 48071 | (586) 427-5385 |