User talk:103.55.108.240

Recent edit to Optical mount
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Optical mount, but you didn't provide a reliable source. It's been removed for now, but if you'd like to include a citation and re-add it, please do so! If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Thank you! Tolly 4  bolly  06:23, 27 November 2019 (UTC)