4. D, It increases sales and profits.
5. A, Can have many different meanings.
What is it you're trying to ask?
Answer:
Metal Gauge
Explanation:
Metal Gauge is a tool that can have a rounded or rectangular shape and serves as a very useful meter, being able to measure the length and thickness of the most varied elements that would be measured efficiently by a common meter.
That few words we can say that Metal Gauge is a mobile marker that measures short distances and correct thicknesses, such as distance between buttons, pleats and hems.
Pivot mean the central point, pin, or shaft on which a mechanism turns or oscillates.