Caption: Watch cogs and gears from a 7-jeweled watch escapement. The red area is a ruby jewel used in a bearing. An escapement is a device within a watch that provides periodic impulses to the balance wheel that helps to regulate time- keeping. Jewels (natural or man-made) were used in watch bearings because their smooth surfaces offer little friction and slow wearing. Due to the age of the watch there has been some corrosion of the metal gears.
Magnification*: x6
Type: SEM
Copyright 2004 Dennis Kunkel Microscopy, Inc.
Keywords: 92343B,09.01.04,bearing,bearings,cog,cogs,gear,jewel watch,jeweled bearing,jeweled watch,man made,manmade,mechanical bearings,mechanical gears,mechanical parts,metal,miscellaneous,SEM,watch bearing,watch cog,watch gears