Boaz and Jachin
The names of two brazen columns set up in the porch of Solomon's temple. Each was eighteen cubits high and twelve in circumference. They had brass chapiters on top, five cubits high, with decorations of lilies and pomegranates, and each chapiter was wreathed with seven chains. The pillars and chapiters were made by Hiram of the tribe of Naphtali, a worker in brass from Tyre. He named the left column Boaz and the right column Jachin. They had doubtless a symbolical import.
1 cubit is ca. 457 mm or 18 in.