try to find 0.5 mm inner diameter pipe, 10cm long, fit all the pins, pour some silicone, you should have a good representation of the socket... if you didn't forgot to add some wax or similar to unmold the silicon. the more parallel your pipes will be, the more accurate your print will be. for a good print, the end of the pins is not important, the most important is the place they have at the beginning, the nearest to the display. without sacrifying a display; I don't see any other way to have a good measurement.
Le samedi 4 novembre 2023 à 10:04:19 UTC+1, Richard Scales a écrit : > Hello, there are indeed a few the line up - it's the ones that don't that > worry me the most! > - RIchard > > > On Saturday, 4 November 2023 at 08:54:44 UTC Benoit Tourret wrote: > >> Hello Richard, >> >> have a look on the SP-351, >> >> https://www.tube-tester.com/sites/nixie/data/datasheets/SP-351_SP-352-drawing-01.jpg >> [image: SP-351_SP-352-drawing-01.jpg] >> not the same number of digit, but some of the pins should be identical... >> On my SP-356, there is 0 aligned pins on a diagonal way. only in >> horizontal. >> >> Le samedi 4 novembre 2023 à 07:31:29 UTC+1, Richard Scales a écrit : >> >>> I used to so that but it relies on all the pins being straight and for >>> this particular display - there are 30+ pins in a very small space - the >>> more accurate the better - especially when it finally comes to plugging the >>> things in! >>> [image: TTPicture.JPG][image: PPpicture.JPG] >>> >>> Perhaps the differences are so subtle it's not worth worrying about. >>> It's like staring at constellations! This group on the left seems a little >>> out of alignment when compared with the image from Sperry, it's counterpart >>> in the image for the character on the right looks more like my chart - yet >>> - from the data I have logged - the chart shows similar groupings for left >>> and right - is their image wrong ? is their data wrong? >>> >>> [image: DDpicture.JPG] >>> >>> When daylight comes I'll get eyes on the physical display though I fear >>> at my age - that may be the least helpful method! >>> >>> - Richard >>> >>> On Saturday, 4 November 2023 at 06:09:25 UTC Audrey wrote: >>> >>>> You could scan the bottom of one using a scanner and convert to >>>> inches/mm using the DPI. >>>> >>>> On Sat, Nov 4, 2023, 2:04 AM Richard Scales <[email protected]> >>>> wrote: >>>> >>>>> I'm looking for any details of the pinout of the Sperry / Beckman >>>>> SP-252 Multi Segment display which are any better than the one that I >>>>> found >>>>> over at tube-tester.com: >>>>> https://tube-tester.com/sites/nixie/data/SP-252/sp-252.htm >>>>> >>>>> I'm making a footprint and need to get the pin positions as accurate >>>>> as possible. My usual process for this is to copy the pin positions into >>>>> a >>>>> spreadsheet and make a scattergram which should represent the pin >>>>> positions. >>>>> >>>>> This allows me to spot any obvious blunders. It's just that the image >>>>> I have is not that clear and there is some information missing (IMHO) so >>>>> if >>>>> anyone can point me to anything better I would be most grateful. >>>>> >>>>> I could not find it in the Sperry Information Systems catalogue for >>>>> which I already have a PDF. >>>>> - Richard >>>>> >>>>> -- >>>>> 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 [email protected]. >>>>> To view this discussion on the web, visit >>>>> https://groups.google.com/d/msgid/neonixie-l/171bf56b-7195-454e-8ebb-2ef9aceb2e78n%40googlegroups.com >>>>> >>>>> <https://groups.google.com/d/msgid/neonixie-l/171bf56b-7195-454e-8ebb-2ef9aceb2e78n%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- 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 [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/4c93601f-3482-4828-bc1c-8082df8e494bn%40googlegroups.com.
