Reference edition:

Gerberti postea Silvestri II papae, Opera Mathematica (972-1003), Accedunt aliorum opera ad Gerberti libellos aestimandos intellegendosque necessaria per septem appendices distributa, collegit ad fidem manuscriptorum partim iterum partim primum edidit, apparatu critico instruxit, commentario auxit, figuris illustrauit N. Bubnov, Berolini 1899, 510-516.

The short text received under the name of the gromatic Nipsus in the Corpus agrimensorum Romanorum, entitled Podismus, 'measurement by feet', has a mathematical content. Initially, basic information is provided on the different types of measurement (rectum, planum, solidum) and angles (rectus, acutus, hebes). The discussion then continues with trigonometric calculations to obtain the unknown measurements of a triangle based on known data. [R. Tabacco]