Canna (pl. canne; proper meaning in Italian: Cane) was an ancient Italian unit of length, which differed from place to place.

• Capua: 2.1768707 m (9th – 15th centuries)^[1]

• Republic of Genoa: 2.49095 m
• Kingdom of Naples:
  • canna: 2.1163952 m (edict of 6 April 1480)
  • canna: 2.6455026 m (law of 6 April 1840)
  • field surveying canna: 6.998684 m² (law of 6 April 1840)
• Romagna: 1.9928 m
• Sicily: 2.062 m
• Tuscany
  • field surveying canna, a.k.a. 5 "braccia" long "pertica": 2.9183 m
  • canna (fabric): 0.58366 m
• Rome
  • canna (architecture): 2.234 m
  • commercial canna: 1.992 m
• Teramo: 3.17 m
• Malta: 2.08 m (2 yd, 10 in)^[2]

Sources

• Guidi, Giuseppe (1855) [1839]. Ragguaglio delle monete dei pesi e delle misure attualmente in uso negli stati italiani (in Italian). Firenze: Federico Pustet / Le Monnier. Retrieved 12 July 2015.