71. Editions: Friedrich Blume, Karl Lachmann, Adolf Friedrich Rudorff: Gromatici veteres. Die Schriften der römischen Feldmesser. Band 1, Georg Reimer...

and a device called a groma, which helped them obtain right angles. The gromatici, the Roman equivalent of rod men, placed rods and put down a line called...

generally referred to as groma, from the name of the instrument used by the gromatici (surveyors).[citation needed] In such cases, the grid was traced by extending...

research that had been done on the work of Roman land surveyors (known as gromatici) elsewhere in the Roman Empire. As well as aligning roads, Roman land...

Agennius Urbicus, Hyginus Gromaticus and other writers, known as the Gromatici or Agrimensores ("land surveyors"). The work is preserved in various manuscripts...

as managing taxes for the treasury. Siculus Flaccus, one of the Roman gromatici (i.e. land surveyor), wrote the Categories of Fields, which aided Roman...

of the Roman government devoted to transportation, employed full-time gromatici (surveyors). The surveyors' job was to gather topographical information...

55. Friedrich Blume, Karl Lachmann, Adolf August Friedrich Rudorff, Gromatici veteres. Die Schriften der römischen Feldmesser. 2 Volumes, Berlin 1848–1852...