2 Chronicles 26:15
And he made in Jerusalem engines, invented by cunning men, to be on the towers and upon the bulwarks, to shoot arrows and great stones withal. And his name spread far abroad; for he was marvellously helped, till he was strong.
Cross-reference
2 Chronicles 26:10
Parallel
In 2 Chronicles 26:10, Uzziah builds towers and cisterns; here he makes machines for those towers, complementing his projects.
Deuteronomy 20:20
Parallel
In Deuteronomy 20:20, trees are used for siegeworks; Uzziah builds machines to shoot stones, both siege warfare methods.