Microscope parts

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Across
  1. 2. base for eyepiece
  2. 5. holds slide
  3. 6. allows you to move around all lens
  4. 9. you hold it by
  5. 10. controls amount of light
  6. 12. allows you to see 40x,100x,400x
  7. 13. bottom
Down
  1. 1. sharper vision
  2. 3. allows vision
  3. 4. 4x,10x,40x formula
  4. 7. move stage
  5. 8. you put slide on it
  6. 11. what this crossword is about