ייִדישער מחשבֿה אויף יחזקאל 43:15

The horns by contrast, are mentioned, as it is written,⁷Yechezkel 43:15. “From the Ariel upward, there were four horns,” and it is written:⁸Ibid.:17. “And the edge (g’vul) around it was half a cubit.” The latter phrase refers to the horns. This verse should be understood as meaning, when the area at the edge of the Altar is measured from the center of a horn, it is half a cubit to each side. Thus, each horn measured 1 cubit by 1 cubit in total.