Wikipedia
Scrupulum
, meaning a tiny stone (from sharp stone), indicates a weight of 1/24 of an ounce or, by extension, of other measures. Metaphorically, the stone is thought to be sharp and pricking, like a thorn.
- As a weight or a coin, 1/24 of an , or 1/288 of an as
- As a measure of land, 1/288 of a
- As a measure of time, 1/24 part of an hour.
The forms , , and can be found, being also associated with the lines on a draughtboard.