IV-18 is a VFD (Vacuum Fluorescent Display) tube. It has 8 seven segment digits with decimal point. Tube can display numbers from 0 to 9 in green color. The first segment has a thick dot on top of the '-' sign. NEW, NOS and never used before!
Brightness: 400 kd/m2;
Glow Current: 85 mA;
Grid Current: 11 mA;
Total segment Current (for one digit): 8 mA;
Tube size: 18 x 115 mm (0.72"x 4.6");
Digit height: 10.5 mm (0.42"). 
