eidograph

An architect uses an eidograph to enlarge a detailed floor plan.

Definition

1. Noun:
   • A drawing instrument: An "eidograph" is a mechanical device used for copying, enlarging, or reducing drawings or plans. It is a type of pantograph that uses a system of rods and pivots to accurately trace and reproduce an image at a different scale.

Usage Examples

• Noun:
  • The architect used an eidograph to produce a scaled-down copy of the building plans. (A device for reducing the size of a drawing.)
  • Before photocopiers, artists relied on the eidograph to transfer designs onto a different surface. (A historical tool for copying images mechanically.)

Advanced Usage

• "to operate an eidograph": to use the instrument for copying or scaling.

  • She learned to operate the eidograph by adjusting the pivot points and tracing the original image carefully. (To manipulate the device to achieve accurate reproduction.)

• "eidograph tracing": the process or result of using the instrument.

  • The eidograph tracing of the map was nearly identical to the original, only half the size. (The output of the device.)

Variants and Related Words

• Eidographic (adj): relating to or produced by an eidograph.

  • The eidographic copy maintained the fine details of the original drawing. (Pertaining to the instrument's function.)

• Pantograph (n): a similar but more common instrument for copying and scaling drawings; the eidograph is a specific type of pantograph.

  • While a pantograph uses a simple linkage, an eidograph often includes a more precise parallelogram mechanism. (A related device.)

Synonyms

• Pantograph: a general term for a copying instrument with a movable arm.
• Copying machine: a modern equivalent (though electronic rather than mechanical).
• Reducing instrument: a device that scales down images.

Related Idioms