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@Notjohn - The mathematical and musical notation symbols you're referring are properly called 'primes'.
In typography they are distinct from so-called straight/typewriter/programmer quotes and double quotes ( ' " ), (U0022 and U0027). Although that's what most people use.
There are single, double and triple primes, right leaning ( ′ ″ ‴ ), U2032-4, and left leaning ( ‵ ‶ ‷ ) U2035-7.
I think 'primes' are sometimes referred to 'ticks', or maybe they're something else.
BR
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