Amanda M. Czerniawski From Average to Ideal The Evolution of the Height and Weight Table in the United States, 1836–1943 This article examines the historical origins of the notion of “ideal” body weight by tracing the evolution of the gender-specifc height and weight table in the United States from 1836 to 1943. Fewer than 200 years ago, weight was not regarded as an important health issue. At the turn of the twentieth century, low body weight, not overweight, was the leading concern of medical practitioners. With the rise of actuarial science, weight became a criterion insurance companies used to assess risk. Used originally as a tool to facilitate the standardization of the medical selection process throughout the life insurance industry, these tables later operationalized the notion of ideal weight and became recommended guidelines for body weights. The height and weight table was transformed from a “tool of the trade” into a means of practicing social regulation. Scales are a means to determine one’s “ft”—how one measures up physically and, in some cases, morally to others. Introduced to the United States from Germany in 1885, the penny scale frst appeared in drugstores and groceries and eventually sprouted up in railroad stations and subways, movie theaters, banks, and ofce buildings (Schwartz 1986: 186). The penny scale allowed Americans to measure their body weight to the nearest pound, promoting the shift from a subjective to a numeric approach to evaluating weight. This new invention heralded an era in which weight was quantifed into pounds of fesh, and a new concern emerged—the fght against fat. As Americans at Social Science History 31:2 (Summer 2007) DOI 10.1215/01455532‑2006‑023 © 2007 by Social Science History Association