Jamieson, Fausset and Brown on Exodus 27:9-19

9-19. the court of the tabernacle--The enclosure in which the edifice stood was a rectangular court, extending rather more than fifty yards in length and half that space in breadth, and the enclosing parapet was about three yards or half the height of the tabernacle. That parapet consisted of a connected series of curtains, made of fine twined linen yarn, woven into a kind of network, so that the people could see through; but that large curtain which overhung the entrance was of a different texture, being embroidered and dyed with variegated colors, and it was furnished with cords for pulling it up or drawing it aside when the priests had occasion to enter. The curtains of this enclosure were supported on sixty brazen pillars which stood on pedestals of the same metal, but their capitals and fillets were of silver, and the hooks on which they were suspended were of silver also.