Various used twist drills are arranged to a star on a white background. In 1863 Giovanni Martignoni designed the first drill with a twisted groove.

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Various used twist drills are arranged to a star on a white background. In 1863 Giovanni Martignoni designed the first drill with a twisted groove. A great moment of technology.

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Size: 3888px × 2592px
Location: Studio shooting, Trossingen
Photo credit: © Edgar G. Biehle / Alamy / Afripics
License: Royalty Free
Model Released: No

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