- A compass, more accurately known as a pair of compasses, is a technical drawing instrument that can be used for inscribing circles or arcs. As dividers, it can also be used as a tool to mark out distances, in particular, on maps. Compasses can be used for mathematics, drafting, navigation and other purposes.
- Operação Prato (Wikipedia)
Operation Saucer (Portuguese: Operação Prato; literally, Operation Plate) was an investigation carried out between 1977 and 1978 by the Brazilian Air Force following alleged UFO sightings in the city of Colares. The investigation was closed after finding no unusual phenomena.