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Creation date / 2019 / All / 25
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- A machine shop manufacturing advertisement from 1923.
- A vintage machine shop manufacturing history project.
- A vintage Rockford, Illinois machine shop manufacturing history project.
- American Machinist manufacturing history project.
- Arrow shows the herringbone gears.
- BARNS Swing Drill manufactured by the W.F. & John Barnes Company.
- BARNS SWING DRILL.
- INGERSOLL AD.
- INGERSOLL ADVERTISEMENT.
- MADE IN THE U.S.A.
- MANUAL 33177A.
- MANUAL 33179B.
- Massive harringbone gears added to the governor collection.