14pc Pocket Watch Keys Set Sizes 00-12 Winder Winding Winder Setting Set Key Vintage Antique Watches

 

A handy set of pocket watch winding keys.

 

To determine what size key is required for winding or setting your vintage pocket watch, you'll need to accurately measure the size of the winding and/or setting square (the square-shaped "shaft" that is either used to wind or set the watch). This measurement must be made accurately, preferably with caliper or micrometer.

 

It is handy to have a set available to ensure that you are able to use the right key size. Using too large a key will tend to round off the corners on your winding square, and once they are rounded off, you'll no longer be able to wind or set the watch. A key that's too small simply won't fit over the square.

 

Note that key-wind/key-set watches sometimes used the same key for winding and setting, and sometimes used different keys for winding and setting. Be sure to measure both squares if you have a key-wind/key-set watch.

 

Pocket Watch Winding-Key Size Chart


Size of square (mm)

English Key Size

Euro Key Size (e.g. Bergeon)

0.90

00

12

1.00

0

11

1.10

1

10

1.19

2

9

1.29

3

8

1.38

4

7

1.47

5

6

1.54

6

5

1.61

7

4

1.68

8

3

1.75

9

2

1.85

10

1

1.90

11

0

2.00

12

00

 

 

 

 

 




















Detail

14pcs Winding Keys

Sizes: 00, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

Held by Metal Chain

Approximate Dimensions of Keys

Total Height: 34mm

Maximum Width: 12mm