(*) the Roman palm used here is probably not the Ancient Roman palmus (minor), but the 18th C. palmo Romano, the palmo degli Architetti, in use in Roma, Italia (due to the comparison of the scales on the plan itself).
Date
Source
Library of Congress (LoC), Washington D.C., USA [6]
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
↑Antonio Pasquale Favaro: "Metrologia o sia trattato generale delle misure, de' pesi e delle monete; Tavole delle Misure Antiche" - [Metrology or General Treatise on Measures, Weights and Coins; Tables of Ancient Measurements]. Napoli: Gabinetto Bibliografico e Tipografico, 1826. [See p.15: palmo, Roma (Antica) = 0.07715 m; p.88: piede di Parigi = 0.3248 m; p.96: piede di Inghilterra (Londra) = 0.30479 m; p.104: palmo di Napoli, Regno d'Italia = 0.26367 m; p.111: palmo degli Architetti, Roma, Italia = 0.23334 m]
Uploaded a work by T. Rajola A. from Library of Congress, Washington D.C., USA (https://tile.loc.gov/image-services/iiif/service:gdc:gdcwdl:wd:l_:04:17:1:wdl_04171:0210/276,738,2749,3689/1024,/0/default.jpg) with UploadWizard
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):