Question

define parallax error​

Answer 1

Answer:

Measurements made by viewing the position of some marker relative to something to be measured are subject to parallax error if the marker is some distance away from the object of measurement and not viewed from the correct position.

Answer 2

Answer:

Parallax error is the error in reading measurements of certain things due to the wrong position of the eyes. To avoid any parallax error, the correct position of the eyes is very important. The eyes should be placed exactly vertical above the point that has to be read.

Hope this helps you