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The roadometer was a 19th-century device like an odometer for measuring mileage, mounted on a wagon wheel. One such device was invented in 1847 by William Clayton , Orson Pratt , and Appleton Harmon, pioneers of the Church of Jesus Christ of Latter-day Saints .
Roadometer may mean: Roadometer (odometer) , an early device like an odometer for measuring mileage, towed by a wagon, invented in 1847, by William Clayton , a Mormon pioneer. A type of Drivotrainer , one of these was called a Roadometer .
The Roadometer used two gears and was an early example of an odometer with pascaline-style gears in actual use. [12] In 1895, Curtis Hussey Veeder invented the Cyclometer. [13] [14] The Cyclometer was a mechanical device that counted the number of rotations of a bicycle wheel. [15]
Clayton, along with Orson Pratt and Appleton Milo Harmon, created a novel design for a wooden odometer for use on wagons, also called a roadometer. [ 35 ] : 86–90 Clayton was assigned to record the number of miles the company traveled each day.
The use of this "Roadometer" was the key to the accuracy of the emigrant's guide later published by Clayton that was essential to subsequent travelers of the Mormon Trail. [2] Later in the 1847 trek, Harmon was left with nine other men to construct and operate a ferry across the North Platte River near present-day Casper, Wyoming. [3]
An example of a Crookes radiometer.The vanes rotate when exposed to light, with faster rotation for more intense light, providing a quantitative measurement of electromagnetic radiation intensity.
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The Drivotrainer was an automobile driving simulator promoted by the Aetna Insurance Company and widely used in driver training classes. [1]As an automobile insurer since 1902, Aetna had a financial interest in promoting highway safety.