Gallery›Digital Commonwealth — Boston Public Library›Diminutive Drill -- Peering through a microscope, a General Electric instrument maker brushes away minute chips left by a one-mil (.001-inch) drill too small to be seen by the naked eye. To show the effectiveness of the tiny drill, GE precision instrument makers have not only split human hairs, but have drilled holes in hair and threaded one-thousandth of an inch wire through the holes. The drill is used in the company's General Engineering Laboratory for such functions as drilling fuel nozzles, leak orifices and X-ray apertures.
Digital Commonwealth — Boston Public Library
Diminutive Drill -- Peering through a microscope, a General Electric instrument maker brushes away minute chips left by a one-mil (.001-inch) drill too small to be seen by the naked eye. To show the effectiveness of the tiny drill, GE precision instrument makers have not only split human hairs, but have drilled holes in hair and threaded one-thousandth of an inch wire through the holes. The drill is used in the company's General Engineering Laboratory for such functions as drilling fuel nozzles, leak orifices and X-ray apertures.
[ca. July 1955]
CC0 — Public Domain
Digital Commonwealth — Boston Public Library
[Information from item housing] Drills
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