To save time in checking threads on a twenty-millimeter shell booster, a plant superintendent built this machine. It makes possible a speedy checking of thread accuracy in contrast to the old hand method. The inventor made the machine out of a fan base and a couple pieces of machine steel in a matte
- Date
- 1942
- Photographer / author
- United States. Office for Emergency Management.
- Collection
- FSA/OWI
- Archive
- Wikimedia Commons
- Type
- photograph
- Original size
- 9,788 × 7,742 pixels
Public domainsafest
Reason: a US government work (Farm Security Administration / Office of War Information).
Read from: Commons licence category: PD US FSA/OWI; no CC BY, CC BY-SA, GFDL or deletion tag on the file page.
Credit line
"To save time in checking threads on a twenty-millimeter shell booster, a plant superintendent built this machine. It makes possible a speedy checking of thread accuracy in contrast to the old hand method. The inventor made the machine out of a fan base and a couple pieces of machine steel in a matte" (1942). United States. Office for Emergency Management., via Wikimedia Commons. Public domain. https://commons.wikimedia.org/wiki/File:To_save_time_in_checking_threads_on_a_twenty-millimeter_shell_booster,_a_plant_superintendent_built_this_machine.tifNeed photos for a whole script? Add Find Any Photo to Claude and ask for this one by its id: 126087.
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