Jaivana
The Jaivana (Hindi: जयवाण) cannon is a large 18th-century weapon.
It was cast in 1720, by Jai Singh II of Jaipur the administrator of Jaigarh Fort during the reign of the Mughal Emperor Muhammad Shah. The formidable strength of its builder, the scientifically inclined warrior Sawai Jai Singh II, lay in the large number of artillery and copious supply of munitions which he maintained. Four elephants were used to swivel it around on its axis.
Now it is located at the Jaigarh Fort, Jaipur (India) at (26°58′48.03″N 75°50′37.29″E / 26.9800083°N 75.8436917°E).
The length of the barrel of the cannon is 6.15 m (20.2 ft) and it weighs 50 tons. The circumference near the tip of the barrel is 2.2 m (7.2 ft) and that of the rear is 2.8 m (9.2 ft). The diameter of the bore of the barrel is 28 cm (11 in) and the thickness of the barrel at the tip is 21.6 cm (8.5 in). The thickness gradually increases as one moves towards the rear of the barrel. The two thick rings on the barrel were used for lifting it with the help of a crane which, though incomplete, is still lying in Jaigarh. A 776-millimetre-long (30.6 in) elevating screw was used for raising and lowering the barrel.
The barrel has floral design. An elephant rests on the tip of the barrel and a pair of peacocks are carved in the center. A pair of ducks also decorates the rear of the barrel.
Jaivan rests on a high two-wheeled carriage. The wheels are 1.37 m (4.5 ft) in diameter. The carriage is equipped with two removable additional wheels for transport. The removable wheels are 2.74 m (9.0 ft) in diameter.
About 100 kg (220 lb) of gunpowder fired a shot ball weighing 50 kg (110 lb).
The uses and range of the cannon and cannonballs vary over different sources.
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Wikipedia