What is the length of the short dashes of the centre lines?

Which is the wrong statement from the below options?

Dimension lines should be drawn at least ____mm away from the outlines and from each other.

Which one is a method of dimensioning :</p>

</p><p>Identify the convention type for engineering trades in the given engineering drawing.</p> <p…

The wrong statement about leader line is _________

Which of the following dimension needs to be calculated?

Identify the ‘a’ in the below given picture.