On 16/05/2021 14:11, Chris Hogg wrote:
Old fogey here! I still think in feet and inches. What does annoy me a
bit is when a gardening author says something like 'spaced
approximately 12" apart (30.48 cm)'. FFS if it's only approximately
12" then say 30cm! An exact conversion isn't necessary. I blame the
editors - probably run the whole text through a piece of software that
converts all references to feet and inches into the metric equivalent,
regardless of context.

This is not unique to gardening authors.

Andy