Public domain
A New Britain-Gridley lathe is worked by an experienced operator at a Midwestern company. The machine which formerly made spur gears, worm wheels and commentator rings has been converted to war use by being tooled with an eccentric spindle and thread rolling attachment for the production of twenty-m
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineA New Britain-Gridley lathe is worked by an experienced operator at a Midwestern company. The machine which formerly made spur gears, worm wheels and commentator rings has been converted to war use by. 1942-01-01. United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.