A power-driven finder refers to a device or instrument that is operated mechanically or electronically. Synonyms for this term may vary depending on the context in which the word is used. In some cases, terms such as electric, automated, or motorized may be appropriate. Alternatively, words like mechanical, computerized, or digital may be more fitting. Other synonyms for a power-driven finder may include the terms navigational tool, search engine, locator, or positioning system. Ultimately, the synonym used will depend on the specific type of instrument being referred to and the function it serves.