Jump to content

Chart For Watch Movement Sizes

WillFly
 Share

Recommended Posts

WillFly Distinguished Member

WillFly

Posted
Posted (edited)

I was going through my watch files today and thought I would post this handy chart of watch movement sizes in lignes, "Lancashire" sizes, millimetres and inches - just for reference if anyone needs it.

 

post-64-0-38738800-1400772210_thumb.jpg

Watch sizes.rtf

Edited by WillFly
  • Like 7
Link to comment
Share on other sites
  • 1 month later...
  • 1 month later...
  • 1 month later...
  • 4 weeks later...
arruhy New Member

arruhy

Posted
Posted

thank you will, sepasgozaram (persian).

I didn't know about movement sizes, thus I seach and find some more info that maybe useful for others:

 

A watch movement's size is gauged by measuring it across its center on the dial side through its narrowest point. This system is used by the U.S. Customs in determining the amount dutiable on imported movements, and thus it has become associated with the sizing of all watch movements brought into this country. Although the use of the millimeter to determine watch sizes is growing steadily, the predominant system still in use is the LIGNE. The LIGNE is equal to the twelfth part of the French Inch, which is approximately 1/16th larger than our own inch. One French ligne=2.25583 or roughly 2¼ mm. Thus a 10 ligne movement should gauge 22.5mm. In inches this would measure .8881 as the LIGNE is equal to .0888 parts of an inch. (Note: These days, movement sizes are more commonly stated in millimeters - Rob )

The SIZE as a gauge with which to measure movements is still used by some of the older American watch manufacturers to indicate the dimensions of their movements. The SIZE as a unit has its basis in the old "0" size movement. This movement measures 1 5/30". A difference of 1/30" accounts for each size smaller or larger than the starting point of the system, the "0" size watch movement. Thus a "1" size movement would be 1 6/30", a "6" size movement 1 11/30". Watch movements smaller than the "0" size are designated by adding zeros to the size. Thus a movement one size smaller than the "0" would be a 2/0 size movement and would gauge 1 4/30", the 3/0 size would then measure 1 3/30. Conversely, the "25" size watch movement would measure just 2 full inches.

A good way to remember sizes of the American and Swiss gauges is to associate the unit we know best, the inch, with both the American and Swiss equivalents. For example, the 6/0 size American movement is exactly one inch in diameter ("0" size = 1 5/30" - 5/30" = one inch). Also, the Swiss 11¼ Ligne is just a few ten thousandths of an inch under one inch, and can be called a one-inch watch movement.

 

ref: http://people.timezone.com/library/workbench/workbench631691117422306218

 

and :

 

Although the use of the millimeter to determine watch sizes is commonplace now, the predominant system still in use up until the 1960's and even to some extent in the 1970's, was the LIGNE. The LIGNE is equal to the twelfth part of the French Inch, which is approximately 1/16th larger than our own inch. One French ligne=2.25583mm or roughly 2¼ mm. Thus a 10 ligne movement should measure 22.5mm. In inches this would be 0.8881 as the LIGNE is equal to .0888 parts of an inch.

American watch manufacturers used to indicate the dimensions of their movements, by means of their own unique "Size" gauge. The "SIZE", as a unit of measurement, had its basis in their old "0" size movement. This movement measures 1" + 5/30" in diameter. Each difference in diameter of 1/30" accounts for each size smaller or larger than the starting point of the system, ie. the "0" size watch movement. Thus a "1" size movement would be 1" + 5/30" +1/30", or 1"+ 6/30" (or 1.2") and a "6" size movement would be 1 + 5/30 + 6/30", or 1 + 11/30" (or 1.366"). Watch movements smaller than the "0" size are designated by adding zeros to the size. Thus a movement one size smaller than the "0" would be a 2/0 size movement and would measure 1" + 5/30" - 1/30", the 3/0 size would then measure 1" +5/30" - 3/30". Conversely, the "25" size watch movement would measure just 2 full inches. A very confusing system compared to the modern simple metric system!

 

ref: http://members.iinet.net.au/~fotoplot/tech/wmms.html

Link to comment
Share on other sites
  • 7 months later...
guidovelasquez WRT Addict

guidovelasquez

Posted
Posted

Muchas gracias por compartir esta valiosa información.

He copiado los datos del texto enriquecido y los pasé a un documento de excely  le inserté una tabla.  Y entonces los llevé de nuevo a word y los exporte en pdf 

Lo comparto con ustedes.

 

Un Saludo.

 

 

Link to comment
Share on other sites
Geo Distinguished Member

Geo

Posted
Posted

Gracias por la conversión de los datos a PDF, estoy seguro que los miembros se encuentra este muy útil. El foro va viento en popa y es s genial tener de entrada de todo el mundo. Skip hablar español, así que espero que el traductor ha trabajado bien?

  • Like 1
Link to comment
Share on other sites
  • 1 year later...
MWNAWR Member

MWNAWR

Posted
Posted

Can't f

On ‎06‎/‎11‎/‎2014 at 8:11 AM, clockboy said:

Ok looking through my files found this chart that I have made up over the years. It is watchmakers logo,s which I have found really useful when I need to identify and watch movement. P.S I use a Mac but the PDF does explained using the tool bar.

 

 

Watch maker logos.pdf

 

Link to comment
Share on other sites
  • 5 weeks later...
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • oldhippy
      Movement inserted from crytal side

      By oldhippy · Posted

      Before putting it back in the case I would fit the hands and use a pin vice on the stem to make sure the hands were in line. 
    • Jon
      Introducing myself

      By Jon · Posted

      Hi there  
    • Jon
      Movement inserted from crytal side

      By Jon · Posted

      Put the movement in a movement holder and it will be supported as you push down on the setting lever post to release the winding stem. Make sure the post is over the shoulder of the movement holder so what you are pressing down on is supported. As a general rule, hold the movement and not the movement holder. Replace the hands when the movement isn't in the case and support the centre jewel (if it has one) on a hard surface or staking block when replacing the hands to stop the jewel accidentally moving or even coming out. A dedicated movement holder with a central jewel support is even better, but pricey
    • JohnR725
      Main spring

      By JohnR725 · Posted

      It might help us if we knew which watch like model number.
    • Zedster
      Movement inserted from crytal side

      By Zedster · Posted

      Hi, guys I have a bit of a predicament and hopefully, somebody can advise. I'm working on a Roamer MST 521 where the movement is extracted from the crystal side. I'm now at the final hurdle where I need to replace the movement back into its case but I'm not sure of the correct procedure. I still need to fit the hands but that's where the problem lies. If I insert the winding stem to test the hands for correct alignment I will need to turn the movement over to release the stem again it's the spring-loaded type and needs a small bit of force to push down but with the hands fitted, I don't think I can do this on a cushion without causing some damage to the hands and that's the last thing I want to do, this watch has already been a love-hate relationship and I'm so close to boxing this one off which I'm counting as my first major project.  The other option is to case the movement then fit the hands and hope everything is okay. I've already broken the original winding stem but managed to find a replacement, the last one in stock, so I'm a bit reluctant to keep removing it. Any suggestions would be appreciated. 
×
×
  • Create New...