1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z

Mechanical watches

Watches that are powered by a mainspring whereby the oscillating system runs purely on a mechanical basis, e.g. balance or pendulum.

Mohs hardness scale

This scale was devised to divide the whole spectrum of harness using a scale of 1 to 10. “1” stands for a very soft material (talcum) and “10” for the hardest material (diamond).