With it means with the bronze listed in verse 29. The bases for the door of the tent of meeting is literally “the bases of the entrance of [the] ʾohel moʿed.” This refers to the bases to go under the four posts at the “entrance” (Good News Translation) of the tent itself, where the “screen” was to be hung. (See 36.38.) The bronze altar and the bronze grating for it refers to the “altar of burnt offering” in 38.1 and the “grating” mentioned in 38.4. (See the comments there.)

The bases round about the court refers to the bronze bases mentioned in verses 10-12 above. The bases of the gate of the court refers to the four bases mentioned in verse 19 above. All the pegs … about the court refers to all the pegs mentioned in verse 20 above.

Quoted with permission from Osborn, Noel D. and Hatton, Howard A. A Handbook on Exodus. (UBS Helps for Translators). New York: UBS, 1999. For this and other handbooks for translators see here .