Can I switch rulers and page set up from metric to US imperial

I am used to setting things up in inches not cm’s and I have a new computer and version of Libre Office. any help, please.

(Spoken aside)
The US joined the metre convention in 1878 (only 3 years late).
Shall this imperial nonsense last forever?
What about introducing an up-to-date international system of units to everyday use within the next few centuries?

Does the advice given at Selecting Measurement Units - LibreOffice Help help you get LO set up as you want​?