1 Kings 7:47

There was no reckoning of the brass of which he made all these works, from the very great abundance, there was no end of the weight of the brass. In the country round about Jordan did he cast them, in the clay land between Socchoth and Sira.

And Solomon left all the vessels unweighed, because they were exceeding many: neither was the weight of the brass found out.

Solomon left all the vessels unweighed, because there were so many of them. The weight of the bronze could not be determined.