Machine parts of all kinds, excepting those intended for specific critical functions, are usually marked in one way or another. Often, these marks take the form of part serial numbers, part identification, bar codes, and even company logos. These various identifier marks serve the purposes of inventory tracking and proper part matching in an assembled machine such as a car engine or an assembly line robot.
In past times, a machine part was marked using an engraver or even a paint stencil. With time, however, these marks either faded, rubbed off, or in the case of an engraving would degrade with abrasion. Printed stickers would be used starting from the 1970s as a cheap means to apply identifiers onto parts...Read More >>