Glossary
What GPS does a gyroplane use?
Panel-mounted GPS is often built into the same glass cockpit display that shows flight and engine data, instead of a separate box. Portable and tablet-based GPS, running an aviation app, is also common, particularly on simpler or older panels.
That is the whole entry for now. The longer version, with the mechanics and worked examples, is still to be written. See autorotation for how those read once they exist.