W dniu wtorek, 14 stycznia 2020 22:15:16 UTC+1 użytkownik Terry Bowman napisał: > > > Then there is the famous "spiral" in tubes like the ITT58GSST. That one > has the symbols "+, −, ~, (spiral)" so obviously it was a prefix tube for a > voltmeter and/or ammeter but what does the spiral indicate? I've been told > that it was "overload" which seems logical enough. A friend of mine says > that he saw the spiral used in something like a gas chromatograph to > indicate that the oven was still warming up so who knows? Perhaps it was > used for multiple applications. > > > > >From what I've read, the spiral symbol could be used also as an indicator that the measurement is not complete - for example, for long sampling periods of voltage measurements. It's pretty much the same as hourglass next to the mouse icon on Windows PC - indicates, that work is going on. I've removed some ZM1263s from boards, which looked like they used in some measurement device. Unfortunately, I didn't receive any info about what kind of devices were they - only the nixie PCBs with ZM1263s and ZM1175/ZM1177s. So they definitely were used in commercial devices, but their purpose still remain a mystery.
When it comes to uncommon symbols - there is a line of Polish Dolam nixies with almost whole alphabet. Strangely, some letters can be found in more than one tube, and some aren't present in any. Symbols are LL-551 up to LL-558. No other company produced as many nixies that could be used to display static text. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/bc2290ea-00c3-4445-8c25-a02e5d3d697a%40googlegroups.com.
