ID:
2091
Maker's Name:
Mullard
Where made:
England
Dimensions:
2.7 × 2.7 × 4 cm
This is a numerical indicator tube. There are internal bars representing the numerals 0 to 9. The bars are illuminated at the tip by a Neon discharge when the relevant base pin is selected. The number the bar represents is printed on the panel of the equipment in which the tube is mounted.
