Exodus 26
The dimensions of the tabernacle
Exodus 26:15,16 - And thou shalt make boards for the tabernacle of shittim wood standing up. 16 Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.
The Tabernacle is 10 cubits tall (15’) and each board is 1 ½ cubits wide (27”)
Exodus 26:18 - And thou shalt make the boards for the tabernacle, twenty boards on the south side southward.
The sides of the tabernacle contain 20 boards of 1 ½ cubits each or 30 cubits or 45’.
Exodus 25:25 - And they shall be eight boards, and their sockets of silver, sixteen sockets; two sockets under one board, and two sockets under another board.
Eight boards on the west end of the tabernacle (the east end had no boards, but a cloth covering, Exodus 26:36,37.) boards of 1 ½ cubits wide = 12 cubits or 18’.