I swore I had a post on this topic back from like 2013 when the blog was still anonymous. Can’t find it, so am throwing some info up for future reference.
#Scripulum #Scripula #Scrupulum #Scrupula
A scruple is a 1/288 division of something, usually a pound, so 1/24th of an ounce or uncia.
For the use in land division where a scripula was the 1/288 of a iugera and thus 10×10 Roman feet or a decempeda.