Category talk:SVG helices

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@Dnu72: These are some kind of tools, but they are only categorized in Helices. I put File:Roscado04.svg in Leadscrews, but I don't know where the others belong. What are they? Filenames like File:Espiral 032.svg are not helpful. Greetings, Watchduck (quack) 00:16, 7 July 2020 (UTC)[reply]

For different properties: number of entries, the passed, turning sense. Dáni (talk) 20:23, 9 July 2020 (UTC)[reply]
@Dnu72: I don't understand your answer. My question is simple: What are these objects? Watchduck (quack) 21:02, 9 July 2020 (UTC)[reply]