The famous Bell System
The Bell System was world famous for its industrial design research. Click on this link to see what they studied for operator consoles (167K). This diagram shows a stylized woman at the seat of their new cordless switchboard. Before 1972 no switchboard was designed with men in mind, there being no male operators. As JR Snyder Jr. relates, "I'm a small guy, 5'7'' and now almost 160, back then I was only about 128 lbs and I didn't have many problems at the cordboards. But any guy 5' 10' to 5'11' or over was pretty uncomfortable. The boards were sized for women, in fact not being over a certain height and size was a job requirement, sort of like airline stewardesses."