Lathe assembly benches circa 1933. In this picture 9-inch compound drive V-belt drive lathes are being put together, possibly in groups of twenty at a time, at individual work-stations. With manufacture of this model only underway for a year no production line had yet been installed and building lathes required the fetching and carrying of parts and the lifting away of complete units. Each workstation was illuminated by a single bulb.

By the time the first 10-inch lathes were in production a simple chain-driven assembly line had been installed.
Note the "wall-of-glass" windows, a feature of many factories until the arrival of improved electric lighting.

Another view of the same early 10-inch lathe production line.