A tiltmeter on Mauna Loa, used to predict eruptions by measuring very small changes in the profile of the mountain. A tiltmeter is a sensitive inclinometer designed to measure very small changes from the vertical level, either on the ground or in structures.
Mr. Billion - 1977: Filming was done at the Sonoma-Marin Fairgrounds and the Petaluma Speedway. Cujo - 1983: Stephen King's horror flick about a rabies infested St. Bernard featured the Scott Ranch Hills off of Corona Rd. Explorers - 1985: A very young Ethan Hawke and River Phoenix starred in this absurd SciFi movie.
Principal photographic locations were :    Tunisâ¦ia    Guatemala    Death Valley, California    Yuma, Arizona    London studios (Shepperton and Elstree Studios)    Los Angeles, CA   Star Wars (all movies) have been filmed in the following areas: United States (California & Arizona) Guatemala United Kingdom Tunisia Norway Thailand ...