IN-9 is linear gas discharge indicator, intended to display electrical values, transforming them into glowing bar
Glowing color: pink - orange.
Filling gas - neon.
Tube length (total) 5.5 inch (140 mm)
diameter 0.394 inch (10 mm).
Indicator can be used to control various parameters, state of technological processes, in information panels and in measuring devices. Indicating - through side panel of the tube.