Anod IN-1

The IN-1 (&ldquo;NH-1&rdquo;) is the first generation of Nixie tube mass-produced in the Soviet Union. Like some other Soviet Nixie tubes, the IN-1 utilizes an inverted two to represent the number five, although at least some earlier models featured a proper five. This tube is notable for its large phenolic base, with each pin conveniently numbered. As is typical of early Nixie tube designs, the…