Talk:tpi
Add topicLatest comment: 6 years ago by Ungoliant MMDCCLXIV in topic Number
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[edit]Is tpi really plural only? What is the initialism of “one thread/tooth/track per inch”? — Ungoliant (falai) 19:56, 4 April 2018 (UTC)
Is tpi really plural only? What is the initialism of “one thread/tooth/track per inch”? — Ungoliant (falai) 19:56, 4 April 2018 (UTC)Reply