| Business | Phone |
| Davis Inotek Instruments 11212 Indian Trl, Dallas 75229 | (972) 243-7000 |
| Rochester Gauges Inc 11616 Harry Hines Blvd, Dallas 75229 | (972) 241-2161 |
| Texas Weather Instruments Inc 9766 Skillman St, Dallas 75243 | (214) 368-7116 |
| Nicol Scales 7239 Envoy Ct, Dallas 75247 | (214) 428-8181 |
| Texas Electronics Inc 5529 Redfield St, Dallas 75235 | (214) 631-2490 |
| Xci Corp 2705 Canton St, Dallas 75226 | (214) 741-6466 |