The suffix -meter

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Across
  1. 4. a line through the exact center of a circle
  2. 6. measures very small distances
  3. 7. an instrument that marks time with ticks and flashes
  4. 9. a unit of length equal to 1000 meters
  5. 10. international metric system of measurement
Down
  1. 1. measures atmospheric pressure, predicts weather
  2. 2. measures distance traveled
  3. 3. mathematics dealing with lines, angles, points
  4. 5. measures altitude or height above a certain point
  5. 8. the outer boundary of a shape or object