Surveyor's compass


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See Circumferentor.
- Davies & Peck (Math. Dict.).

See also: Surveyor

References in periodicals archive ?
For each egg case, we recorded the other information as before: species and height of vegetation on which each ootheca was deposited plus precise ([+ or -]5[degrees]) orientation with a surveyor's compass. Each egg case was weighed in the lab, placed in a quart mason jar with gauze-covered lid, kept at 20 C, and examined each day to test the hypothesis that south-facing egg cases hatch earlier, because of solar heating, than those oriented in other compass directions.