Answer :

The architect's scale is a specialized ruler designed to facilitate the drafting and measuring of architectural drawings, such as floor plans and orthographic projections. The scale is calibrated such that its measurements are proportional to the real-world measurements of features of a building. In many cases, a common ratio like one inch equals one foot is used for simplicity and ease of use.

Let's consider the statement given:

"The architect's scale is designed so that one inch always equals one foot."

This statement effectively captures the essence of a common type of architect's scale, where the ratio 1 inch = 1 foot is often used.

Given this context, we can conclude that the statement is:

○ a. True

Thus, the architect's scale being described follows this common proportionality.