Final answer:
The numeric scale used as a guide for margin settings, for locating the typing point is the tabulator.
Step-by-step explanation:
The correct option in this case would be tabulator.
When referring to a numeric scale used as a guide for margin settings, for locating the typing point, we are talking about the tabulator function on a typewriter or a word processor. The tabulator sets positions for the cursor to move horizontally across the page and is typically represented by a series of numbers or markings on a ruler-like scale.
For example, on a typewriter, you can set the tabulator at a specific position using the tabulation key or lever. Then, when you press the tab key or use the carriage return, the typing point (i.e., the cursor or typing position) will move to the next tab stop indicated on the scale.