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Summary: I. Women making and shaping spade cutters for guns (endless repetition) using heavy plant, a factory in Britain, 1917 or 1918.
II. Women making internal combustion engines, including some tank engines, and operating a 20-ton crane to move a heavy gun carriage across a shop floor, a factory in Britain, 1917 or 1918.
III. Women demonstrating work with a new fluid gauge which measures in one rapid operation lengths of between 1/1,000th and 1/50,000th of an inch (an inch is roughly 2.5cm), a factory in Britain, 1917 or 1918.