Talk:List of largest optical telescopes in the 19th century

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prime and double prime?
I don't know anything about telescopes. At List of largest optical refracting telescopes I noticed that the imperial measurements (manually converted from metric) are annotated with prime ( U+2032) and double prime (  U+2033) characters; see the talk page there. I have noticed the same thing here. There isn't any use of prime characters denoting feet here but there are 57 instances of double prime characters denoting inches. Is that how it is supposed to be done for astronomical instruments?

—Trappist the monk (talk) 23:38, 4 October 2023 (UTC)