20.5mm numeric tube manufactured by National Electronics

The NL-821 is a clear glass side view nixie tube manufactured by National Electronics. Its relatively rare since it has a digit-height of 20.5mm which is already considered "big" for side view tubes. There is also a version without the decimal point, the NL-807
Brand / Manfacturer National Electronics
Same Types
Likely Tyes
Symbol height in mm 20.5
Characters / Symbols 0-9
Decimal point left
Base / Socket RTS-11
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 0 V
Current per Segment 4.5mA
Reccomend Resistor 8.8kOhm @ 170V, 30kOhm @ 250V, 43kOhm @ 300V