units anomily

[Thomas Radtke]

(05-04-2016 05:47 PM)roadrunner Wrote:  It appears some unit operations are allowed only in CAS while other unit operations are allowed only in Home.

Most has been said already by Cyrille. I'd like to add a tiny bit out of the real world: In e.g. refrigeration engineering, where I work, you are required to express differences in Kelvin. No idea how the Prime handles this, but you should be able to add 5K to 5°F.