American Pocket Watch Sizes

Remember, this is a measure of the diameter of the movement, not the case.


Size

Inches

Millimeters

20

1 5/6

46.56

19

1 4/5

45.72

18

1 23/30

44.86

17

1 11/15

44.02

16

1 7/10

43.18

15

1 2/3

42.32

14

1 19/30

41.48

13

1 3/5

40.64

12

1 17/30

39.78

11

1 8/15

38.94

10

1 1/2

38.10

9

1 7/15

37.24

8

1 13/30

36.40

7

1 2/5

35.56

6

1 11/30

34.70

5

1 1/3

33.86

4

1 3/10

33.02

3

1 4/15

32.16

2

1 7/30

31.32

1

1 1/5

30.48

0

1 1/6

29.62

2/0

1 2/15

28.78

3/0

1 1/10

27.94

4/0

1 1/15

27.08

5/0

1 1/30

26.24

6/0

1

25.40

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