निम्नलिखित में से कौन सा एक विस्तृत पैमाना (enlarging scale) नहीं है?

The ratio of the linear dimension of an element of an object as shown in the drawing to the real linear dimension of the same element is called:

Which scale is used in engineering drawing to read three consecutive dimensions or very small units (e.g., up to 0.1 mm)?