Measuring something indicates that you have a vested interest in what you measure and intend to use what you measure in some fashion (see Ezekiel 40:1–49; Zechariah 2:1–2). Heaven has a vested interest in the temple of God, the altar, and the worshippers.
1 Then I was given a measuring rod like a staff, and I was told, “Rise and measure the temple of God and the altar and those who worship there,