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Across
  1. 2. A scale which measures the distance between an event and an observer based on the speed of sound.
  2. 6. A scale which measures scale the number of heartbeats per minute
  3. 7. In a Chronograph mechanism, this part temporarily connects two wheels - with one wheel transferring power from the mainspring to the other.
  4. 8. A scale which measures the speed of an object in km per hour or other unit.
  5. 10. A chronograph that can be reset without stopping it first.
Down
  1. 1. This style of chronograph has a total of two (answer to five down)
  2. 3. This style of chronograph has a total of three (answer to five down)
  3. 4. This component is depressed to start, stop, and reset the chronograph.
  4. 5. Each sub-dial indication on a chronograph can also be referred to as...
  5. 9. A wheel in vintage and higher-end chronographs that handles the start, stop, and reset functionality.