Question 506General Subjects - Assistant Engineer

The correct answer is B) Engineers Scale. The illustration GS-0023 is likely depicting a navigation-related instrument, and the ruler shown is commonly referred to as an "engineers scale" in the context of nautical charts and navigation. Engineers scales are divided into different increments, typically in fractional or decimal units, which are used to measure distances and dimensions on engineering drawings and nautical charts. This makes the engineers scale the most appropriate choice for the type of illustration provided. The other options are incorrect because a metric scale is based on the metric system, an architects scale is used in architectural drawings, and a micrometer scale is used for extremely precise measurements beyond the scope of this illustration.