Elevation gauge typical of the design of Tartaglia in 1537, for inserting in the barrel of a gun or cannon. Scales on both faces of the instrument. Long arm has scale of equal parts 0-284, by 1, along upper edge. Shorter arm has scale of equal parts.
Inscription/Sig.
"Augustinus Cucco Bombarda(m): et Arcis: Cent(o): fecit 1696"