Of the 9,800 workers employed at RCA in 1936, approximately 75 percent were women. They did all the wiring, crimping, and soldering on the radio sets. On the main production floor, which stretched the length of two football fields, each female line worker performed the labor-intensive operations on 400 to 800 radio chassis each day. Male inspectors stood at intervals of every ten to fifteen female workers to monitor their performance as the women applied the heavy 200-watt irons to the 300 solder joints necessary to build the average radio in 1935. Women working on an incentive piece-rate system also labored on the feeder lines that built intricate subassemblies and components to be placed on the main assembly lines. In contrast, men's part in the production process was to perform the test and repair procedures, build the large and elaborate wooden radio cabinets, staff the machine shop, and design and build the models and prototypes of products that would soon be rolling off the assembly lines.