688 Day19

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Across
  1. 2. Producing wanted results
  2. 5. Having the same measure
  3. 7. Working well without waste
  4. 8. Smooth and level surface
Down
  1. 1. High in price
  2. 2. Extremely good quality
  3. 3. Absolutely necessary
  4. 4. Free from bias; reasonable
  5. 5. Fully correct in every detail
  6. 6. Well‑known from past experience