set the units in preferences

set the units in preferences, it don't change according in the drawing

1) which version of LC?
2) if you change units in settings, it does not mean that the entire drawing will be recalculated (say, from mm to inches)
3) For dimensions, there is own settings that control which units are used in dimensioning entities labels

1) The LC version is 2.2.1.3 (Linux Mint)
2) Under "Drawing Preferences", selecting "Units", I want to change the "Precision" for both - it changed as I choose, but it don't change in the drawing to my settings from it's default - I don't want that 4 digit precision for length and 2 digit for angle.
3) Please explain what is: "For dimensions, there is own settings that control which units are used in dimensioning entities labels"

PS. Under Windows I used an almost identical software (QCad) with which there wasn't an issue like this (both in metric).

Thank You

2: if you change unit from mm to inch, your existing radius = 25.4 mm becomes radius=25.4 inch, stead of = 1 inch. Currently, you have to scale everything by a factor of 1/25.4 manually, if needed.

3: Go to Options > Current Drawing Options > Dimensions to set preferences on precision/significant digits etc. for dimensions.

div wrote

1) The LC version is 2.2.1.3 (Linux Mint)
2) Under "Drawing Preferences", selecting "Units", I want to change the "Precision" for both - it changed as I choose, but it don't change in the drawing to my settings from it's default - I don't want that 4 digit precision for length and 2 digit for angle.
3) Please explain what is: "For dimensions, there is own settings that control which units are used in dimensioning entities labels"

PS. Under Windows I used an almost identical software (QCad) with which there wasn't an issue like this (both in metric).

Thank You

I'm sorry but with point #2, I don't want to change the unit from mm to inch - I only need to change the "precision" settings as referred at my point #2.   So when I draw ie a line, the measurement is then for example 100.0000 mm insted of 100.0 mm, the latter which I wanted - however the angle setting shows as I set it.
3) There is only ""Current Drawing Preferences"" on the version I use and not "Current Drawing Options", but it seem to be the same.

Thank You

Are you aware of this settings choice?

No,  I wasn't aware of that under 'Dimensions" , but thank you so much, now it works as needed!
This makes the "Precision" setting under "Units" as obsolete.

Thanks again

@div

>This makes the "Precision" setting under "Units" as obsolete.

Well, not exactly.

The precision setting in "units" controls the precision that is used for displaying coordinates, angles and lengths in UI of LibreCAD - say, in editors and so on.

In "dimension" - it just controls the amount of digits after the dot in labels of dimensional entities.

So it's possible to see, say, more detailed coordinates and lengths during drawing process to achieve exact drawing, while use less precise units when documenting that drawing using dimensions.

Thanks for clearing that up