What is the length of the scale, if the scale is 1:30?

Which of the following scales is used when there are three units that need to be measured?

What is the maximum length that can be measured using the given scale?

What is the formula of the length of the scale?</p>

The designation of scale recommended by BIS for reduction scale is __________. 

The actual length is 1m. The length of the drawing is 5cm. Find the representative factor.

Which of the following is not an enlarging scale?

The scale used to find angles is ____