When is it appropriate to set a reference for a monument on an offset?

Setting a reference for a monument on an offset is appropriate when conditions warrant it. This situation commonly arises when the original monument is not easily accessible, has been disturbed, or is located in a place that may lead to future conflicts or changes in its position. By using an offset, surveyors can ensure accuracy and reliability in establishing a reference point that can be reliably located and used for future surveys. This practice helps maintain the integrity of boundary lines and provides a means to locate the original monument without needing to expose it directly.

The other options, while relevant in different contexts, do not encapsulate the appropriate circumstances for setting a reference for a monument on an offset as effectively. Temporary monuments may not justify the need for an offset, as the focus is typically on more permanent solutions. Similarly, while establishing land boundaries is crucial, doing so without the appropriate conditions may lead to misinterpretations. Lastly, while the absence of other monumentation might necessitate offsets, it is more about the specific conditions at hand that truly dictate when offsets should be employed.