1. Looks like part of an adjustable grinder (meat or something of the sort).
  2. Not a grinder but closest guess so far
  3. How about the flow controller on a seed spreader?
  4. Nope not a seed spreader. Think bigger
  5. OK, it controls the flow of something that you have at your house. So we can eliminate part of an aircraft carrier.
    shane0911 likes this.
  6. Choke from a smoker?

    Wait you said not airflow related.
  7. Part of a sprinkler?
  8. You never know

    Yes it does control "flow" of something. If i say too much it will give it away.
  9. You have all probably have benefited from its function at one point probably many times. Kids love them.
  10. How about part of a snow-cone or shaved ice machine?