The Map-O-Matic was a useful item that identified gold bolt areas on planet maps (as well as revealing Sewer Crystal locations in Up Your Arsenal). In Ratchet & Clank, Ratchet could acquire the Map-O-Matic from the HelpDesk girl at the Gadgetron Site on planet Kalebo III. In Up Your Arsenal, Ratchet could obtain the Map-O-Matic by helping the Galactic Rangers on planet Kerwan. In Size Matters, Ratchet could purchase the Map-O-Matic from a Gadgetron Vendor.
Megacorp has a version of the Map-O-Matic called the Mapper.