A comprehensive overview of how jewel bearings for chronometers are made, by Elgin Watch Co. 500mb Runtime: 72 min
Redirecting to http://ia601604.us.archive.org/27/items/JewelBearings/ElginChronometerJewelProduction.mov
A comprehensive overview of how jewel bearings for chronometers are made, by Elgin Watch Co. 500mb Runtime: 72 min
Redirecting to http://ia601604.us.archive.org/27/items/JewelBearings/ElginChronometerJewelProduction.mov