In measurements how could you correct parallax error?

To correct parallax error in measurements, you can:

1. Ensure that the measuring instrument is positioned directly in front of the object being measured, so that there is no angle or offset that could cause parallax error.

2. Use a magnifying glass or a viewfinder to align the measuring scale with the object being measured, reducing the chances of parallax error.

3. Use a laser or digital measuring device that eliminates the need for manual alignment and reduces the risk of parallax error.

4. Take multiple measurements from different angles and distances and average them to reduce the impact of parallax error.

5. Practice proper technique and positioning when taking measurements to minimize the chances of parallax error occurring.