The 1880 census in the United States had an increasingly important role, for example, in determining how the political representation would be assigned. But with a growing population, the census was also growing, collecting more data than the government could tabulate or quickly process.
A breakthrough in how all the data could be interpreted came when Charles Seaton, the Chief Clerk of the Census, invented the Seaton Device. It had a complicated system of rollers where you could take a wide sheet and roll it through these rollers so that two columns would appear side by side.
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Andrew Whitby, author of The Sum of the People: How the Census Has Shaped Nations, from the Ancient World to the Modern Age, gives insight into the history and uses of surveys.
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