Jump to content

Chart For Watch Movement Sizes


Recommended Posts

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...

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...

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

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...

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...


  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Many thanks for your advice (being borne in mind at present) & offer Dell. When I was given the clock the plastic anchor was loose on the arbour (it had split at the 'hole') &, after repairing this, I have been trying to determine whether the spindle (pin) should be perpendicular when the pallet is sitting on a flat surface; or whether, when installed, its L-R extremes (or alternatively its tick & tock points) should lie at equal angles from the vertical when moved with spring absent. I can get the clock to run but in every such configuration the top block has to be turned anti-clockwise (from above) by quite a bit in order to be 'in beat' & it always runs fast (despite the pendulum being set to as slow as possible). This makes me wonder if there is any particular feature of/fault in a torsion spring clock which determines which turn direction (if any) is necessary to get it 'in beat'; & whether there would be a different set of settings that would get it running nearer to time at somewhere around the mid timing/inertia position which would then allow tweaking of the fast/slow setting.
    • Now this has happened I bet China or India just to name two will start to produce none genuine parts.  I did. But idiot Boris Johnson failed miserably in his negotiations. The E U stitched up the UK like a kipper. Nigel Farage  offered his help but big head Boris declined. So this is why we are in this mess all because Johnson wasn't clever enough.  
    • Hands up all those who voted to leave the EU 😂, oopsie.  UK has just signed the Hague convention, next year that will provide cross border clout to British courts.
    • Ive heard about that oil before for the lever pins. I found it easy to work on , it didn't have a whole lot of pivot wear but i bit sloppy on the lever cock, i think you have to live with what you have or bin it. Stiff to wind and set ?  Not a cannon pinion issue that has no friction thats made up further back and if I remember the barrel drives the hour wheel. No problem on this one .Let me know when you start it as i have another that donated to this one, i can work alongside you with it, two heads are better than one. 
×
×
  • Create New...