18mm numeric tube manufactured by Gazotron

The IN-4 is a clear glass end-view nixie tube manufactured by Gazotron. It is a perfect tube for end-view style clocks, because the body is smaller than the IN-1, and the tube is really common and available at several online stores. The "5" on the IN-1 is a inverted 2 like in many russian nixie tubes. There are two matching symbol tubes, the IN-7 and IN-7A
Brand / Manfacturer Gazotron
Same Types
Likely Tyes
Symbol height in mm 18
Characters / Symbols 0-0
Decimal point none
Base / Socket 0
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 150 V
Current per Segment 3mA
Reccomend Resistor 6.8kOhm = 2.9mA