| Business | Phone |
| Aba Microscopes & Binoculars San Antonio 78216 | (210) 341-1555 |
| Abacus Instrument Repair 3122 N Saint Marys St, San Antonio 78212 | (210) 735-6527 |
| Advance Optical & Instruments 3122 N Saint Marys St, San Antonio 78212 | (210) 736-4541 |
| Bioindustrial Products 8200 Pat Booker Rd 348b, San Antonio 78233 | (210) 655-6403 |
| Spi Products 6302 Port Royal St, San Antonio 78244 | (210) 662-9611 |
| National Optical & Instruments 11113 Landmark 35 Dr, San Antonio 78233 | (210) 590-9010 |