The prophet is comparing the greatness of God to idols.
He is the God who has measured the waters in the hollow of His hand. He has measured the heavens with the span of His palm – from His thumb to His little finger. He has measured the dust of the earth in a basket. He has weighed the mountains in a scale, the hills in a balance. The nations are like a drop from a bucket. He counts them as the dust of the balance. The nations are as nothing before Him. He counts them less than nothing.
He sits on the circle of the earth. The inhabitants are as grasshoppers. He created the hosts of heaven, the sun, moon, and the stars. He brings them out one by one. He calls them by their names, because of His great power and mighty strength. This is the One who cares for us.