Machinery: plan and elevation of scaffolding erected to raise an obelisk in Rome. Engraving by A. Specus, after D. Fontana.

Public Domain Mark

You can use this work for any purpose without restriction under copyright law. Read more about this licence.

Credit

Machinery: plan and elevation of scaffolding erected to raise an obelisk in Rome. Engraving by A. Specus, after D. Fontana. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.