--- In NEONIXIE-L@..., "marta_kson" <marta_kson@...> wrote:
Are there any differences on the edges of the numerals on clear and slightly darkened tubes? The pictures posted has not enough resolution to see if the edges looks newly cut or "corroded" from use.
Direct inspection of the tubes doesn't reveal any peculiarities about the electrode edges. Since only micro, or even likely nanograms of material could produce darkening of the glass, I doubt eating away at the electrodes would be perceptible.
