Which of the following images shows the correct way of measuring the length of a pencil?

While measuring the length of an object, we need to ensure that the scale is in contact with the object along its length.

Only in the above images can we see that the pencil and scale are in direct contact over the whole length of the pencil; in other images, the pencil and scale are inclined or the tip of the pencil is placed ahead of the scale, which could result in inaccurate measurements.