Appleton Harmon completes the construction of a wooden "roadometer," an instrument designed by Orson Pratt to measure the distances traveled each day by the first pioneer company. The roadometer is not installed on a wagon until May 16.
[The Woodland Institute 'On This Day Historical Database,' http://www.woodlandinstitute.com]
[source: The Woodland Institute 'On This Day Historical Database,' http://www.woodlandinstitute.com]
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