'Seven and a half' in the Bible

“You are to construct the altar of acacia wood. The altar must be square, 7½ feet long, and 7½ feet wide; it must be 4½ feet high.

The length of the courtyard is to be 150 feet, the width 75 feet at each end, and the height 7½ feet, all of it made of finely spun linen. The bases of the posts must be bronze.

Bezalel constructed the altar of burnt offering from acacia wood. It was square, 7½ feet long and 7½ feet wide, and was 4½ feet high.

The screen for the gate of the courtyard was embroidered with blue, purple, and scarlet yarn, and finely spun linen. It was 30 feet long, and like the hangings of the courtyard, 7½ feet high.