GLA manufactures a line of electronic digital thermometers for the livestock / dairy / research / veterinary industries. The M700 & M750 are manufactured in San Luis Obispo CA. Our reputation is based on speed, accuracy, and durability. GLA has been manufacturing fast, accurate thermometers since 1969 and our thermometers are used in all areas of animal health, research, universities, dairies, beef cattle, equine, veterinary and zoo&＃039;s.