|
|
A Guilloché or engine turning pattern is an ornamental pattern formed of two or more curved bands that interlace to repeat a circular design, most commonly seen on banknotes. These patterns were traditionally used for security printing purposes as a protection against counterfeit and forgery, as well as for decorating valuable objects such as Fabergé eggs and pocket watches. The interlace pattern is called guilloche; the result isguilloché.
The devices used to make these patterns are variously called "rose engines" or "geometric lathes".
See also
External links
- Pledge & Aldworth Engine Turners (http://www.pledge.co.uk) site on engine turning (click on Illustrated Engine Turning Reference in sidebar)
- http://www.maa.org/editorial/mathgames/mathgames_02_09_04.html
- http://mathworld.wolfram.com/GuillochePattern.html
- http://www.securitygraphics.com/guilloche.html
- http://www.rgmwatches.com/engine.html
- http://users.lmi.net/~drewid/PWR_engine_turning.html