| Business | Phone |
| Shattuck Precision Machining 2 Park Dr # 7, Westford 1886 | (978) 392-0848 |
| Cad Tech Machine 7 Littleton Rd, Westford 1886 | (978) 692-0677 |
| Clarkworks Machine 496 Groton Rd # 5, Westford 1886 | (978) 692-2556 |
| Lavelle Machine & Tool Co 485 Groton Rd, Westford 1886 | (978) 692-8825 |