20th Century
By the beginning of the twentieth century, new tools made engraving much easier and more exact. One of these tools is the geometric lathe. The lathe is used to engrave images on plates, which are in turn engraved on rolls for such uses as printing bank notes. Another of these tools is the engraving machine. This machine uses a master template to lightly engrave a duplicate image which can be then engraved by hand or by the acid method. The machine also makes possible the reduction or enlargement of the letter for the duplicate image.
Read more about this topic: Steel Engraving
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