What mechanical device is used to indicate musical tempo?

A constitutional amendment defeated in 1990 would have allowed states to prosecute people who desecrated what? Which unit of distance, used for the solar system, equals about 93 million miles, the average Earth-Sun distance? What word names a meaty turkey leg as well as a classic sundae ice cream cone? A war between machines on the planet Cybertron over the AllSpark spills onto Earth in which 2007 film? What slang word describes a medical charlatan? Which California city is the seat of Santa Clara County? Which Medici became the first Grand Duke of Tuscany? What word names a medicinal solution believed to act as a cure-all?