Internet Encyclopedia of Science
TECHNOLOGY
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

                   • HOME
• ABOUT
• CATEGORIES
• USE OF TEXT AND IMAGES
• NEWSLETTER

  



pantograph


pantograph
A draftsman's pantograph, here being used to reproduce a map outline at 2½ times the size of the original
An instrument for enlarging or reducing a geometric figure or motion. It consists of four hinged bars forming a parallelogram, one vertex being fixed. It is used in technical drawing and map-making. A spring-loaded pantograph linkage is used on electric locomotives to collect current from an overhead line.


Related category

   • TECHNOLOGY


Also on this site:

Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History


BACK TO TOP