| Business | Phone |
| Actron Manufacturing Co 15825 Industrial Pkwy, Cleveland 44135 | (216) 898-9200 |
| Bird Electronic Corp 30303 Aurora Rd, Cleveland 44139 | (440) 248-1201 |
| Fluke Bio Medical 6045 Cochran Rd, Cleveland 44139 | (440) 248-9300 |
| Prime Instruments Inc 9805 Walford Ave, Cleveland 44102 | (216) 651-0400 |