10.5mm symbol tube manufactured by Unknown
The Z571M is red coated nixie. The manufacturer of this tube is unknown, but could be RFT/WF. It can display a plus- and minus-sign and a sinewave symbol as well.
|Symbol height (mm)||10.5|
|Starting Voltage (typ)||170 V|
|Maintaining Voltage (typ)||140 V|
|Current per Segment||2mA|
|Reccomend Resistor||15kOhm = 2mA|