Corner markers on isolated land survey plans should be indicated by small circles of what diameter in millimeters?

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Multiple Choice

Corner markers on isolated land survey plans should be indicated by small circles of what diameter in millimeters?

In surveying drawings, the exact position of a corner marker is shown with a small circle to serve as a precise, easily recognizable symbol. The size of that circle is standardized so the symbol reads clearly across different scales and plans without cluttering the map. For isolated land survey plans, two millimeters is used because it provides enough visibility to be noticed on the drawing, yet remains compact enough to avoid crowding neighboring markers, text, or other map features. A circle of only one millimeter may be too faint on typical prints, while a larger size like three or four millimeters risks overlapping with nearby symbols or text and visually overpowering the plan. So two millimeters strikes the right balance between clarity and neatness.

In surveying drawings, the exact position of a corner marker is shown with a small circle to serve as a precise, easily recognizable symbol. The size of that circle is standardized so the symbol reads clearly across different scales and plans without cluttering the map. For isolated land survey plans, two millimeters is used because it provides enough visibility to be noticed on the drawing, yet remains compact enough to avoid crowding neighboring markers, text, or other map features. A circle of only one millimeter may be too faint on typical prints, while a larger size like three or four millimeters risks overlapping with nearby symbols or text and visually overpowering the plan. So two millimeters strikes the right balance between clarity and neatness.

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