The symbol is widely supposed to have been derived from the pheon in the arms of the Sidney family, through the influence either of Sir Philip Sidney, who served as Joint Master-General of the Ordnance in 1585–6 or that of his great-nephew, Henry Sydney, 1st Earl of Romney, who served as Master-General from 1693 to 1702. The origins of the broad arrow device used by the Board of Ordnance are debated. It became particularly associated with the Office or Board of Ordnance, the principal duty of which was to supply guns, ammunition, stores and equipment to the King's Navy. The broad arrow was used in England (and later Britain), apparently from the early 14th century, and more widely from the 16th century, to mark objects purchased from the monarch's money, or to indicate government property. Use for British Government property Ī broad arrow on a Marconi TF1041B valve voltmeter, indicating Ministry of Defence ownership Sidney Sussex's newsletter for alumni is titled Pheon. The pheon features prominently in the arms of the Sidney family of Penshurst, and thence in the arms of Sidney Sussex College, Cambridge, and of Hampden–Sydney College, Virginia. Fox-Davies, in his Complete Guide to Heraldry (1909), comments: "This is not a distinction very stringently adhered to." and resembles a pheon, except in the omission of the jagged edge on the inside of the barbs." However, A. Woodward's Treatise on Heraldry: British and Foreign with English and French Glossaries (1892), makes the following distinction: "A BROAD ARROW and a PHEON are represented similarly, except that the Pheon has its inner edges jagged, or engrailed." Parker's Glossary of Terms Used in Heraldry (1894) likewise states, "A broad arrow differs somewhat.
When these barbs are engrailed on their inner edges, the device may be termed a pheon. The broad arrow as a heraldic device comprises a socket tang with two converging blades, or barbs. Pheon in the arms of the Sidney family of Penshurst: Or, a pheon azure