This
sketch gives an idea of what an ancient Roman goniometer looked like - of the
sort utilised to work out accurate angles in topography, civil engineering work
or even in architecture. This
sketch gives an idea of what an ancient Roman goniometer looked like - of the
sort utilised to work out accurate angles in topography, civil engineering work
or even in architecture.
The plum lines allow the user to ensure the instrument is horizontal. Alternatively a water container could be used as a spirit level. Looking through the aiming site would allow you to point the instrument and measure angles versus a second landmark.
Read more about it in our page about Ancient Roman Maps
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