This means the he will hold one of the articles of his divination that was read as an omen against Jerusalem in his right hand. AT: "In his right hand will be an article of divination with an omen against Jerusalem" (See: [[rc://en/ta/man/translate/figs-metonymy]])
A battering ram was a cut tree or large log with a sharpened end or an end covered in metal. It was held by several men who would pound the end against a wall.
The eyes represent seeing, and seeing represents thoughts or judgment. AT: "in the thoughts of the people in Jerusalem" (See: [[rc://en/ta/man/translate/figs-metaphor]])