EXAMPLES FROM THE WEB FOR DUODECIMAL
They learned to use both the decimal and the duodecimal systems (nowadays we use only the decimal system, which is a great pity).
And at the very first in Egypt, Chalda, and among the Turanian races generally, we find this duodecimal system firmly established.
The fact is noted by Mr. Jayaram Moodaliar that the Kondh system of notation is duodecimal.
But what a pity that we have not 12 fingers, with duodecimal fractions instead of decimals!
If possible, this is even more true here than in the case of the duodecimal system.
Based on the duodecimal system, similarly introduced, as more logical, and more readily used.
Then came “the month of roses,” as the Persians appropriately style that duodecimal portion of the year.
Duodecimal System, in numeration, a system of numbers the scale of which is twelve.
1714, from Latin in duodecimo (see duodecimo).