Vintage Simpson Model 279 Battery Tester – Made in USA Up for sale is a vintage Simpson Model 279 Battery Tester, proudly made in the USA by one of the most respected names in electrical test equipment. Simpson instruments are well known for their rugged construction, accuracy, and quality, making them highly desirable among collectors, electronics hobbyists, and technicians. This tester was designed to quickly check the condition of a wide variety of batteries under load, providing a much more meaningful test than simply measuring open-circuit voltage. The large, easy-to-read analog meter features clearly marked GOOD – WEAK – BAD zones for fast battery
