 |
|
|
||
 |
||||
 |
||||
 |
|
|
|
||
|
||||
|
||||
|
|
VTF MID-EMPS are the most popular low dome height used on open face pocket watches and wrist watches. These Antique Crystals are sold by the old sixteenth size system and the millimeter size listed is only approximate. The difference in each sixteenth in this system is 0.14057 millimeters and is base on the 244 sixteenths sizes between 5 12/16 (13.1 mm) and 20 15/16 (47.4 mm) and the 34.3 millimeter range those sizes come in. No system of Pocket Watch Case Parts for American watches exist in essence. During the heyday of their use when a repair shop was in every village and town all that was done to install was a quick measurement and then to open a cabinet to select crystal. If the first one did not fit the next size larger or smaller was selected. The same system is used today a 100 hundred years after most of this watches were made. An exact measurement is the key to success, however even an experience professional is only successful 70 to 80 percent of the time in selection and inserting the correct size on the first try. |
 | ||||||||
|
Otto Frei, Watch Parts Since 1930 Customers Entrance 126 2nd St. Oakland, California 94607 Mailing Address: PO BOX 796, Oakland Ca. 94604 Freight Shipment Address: 119 3rd St. Oakland Ca. 94607 USA
| ||||||||
