Measurements of Herod's Temple ISBE
Differences of opinion continue as to the sacred cubit. A. R. S. Kennedy thinks the cubit can be definitely fixed at 17,6 inches. (Expostory Times, XX, 24 ff); G. A. Smith reckons it at 20,67 inches. (Jerusalem, II, 504); T. Witton Davies estimates it at about 18 in. (HDB, IV, 713), etc. W. S. Caldecott takes the cubit of Josephus and the Middoth to be 1 1/5 ft. It will suffice in this sketch to treat the cubit, as before, as approximately equivalent to 18 inches.
Read More about Measurements of Herod's Temple ISBE