• FA-123651 © Technisches Museum Wien, Photo: Peter Sedlaczek
Collection Area
Technical and Scientific Principles
Calculating, Drawing & Design Instruments
At the moment this object is not published in the museum.

Panel with rulers


Rulers in all their various forms are indispensable aids in making geometric drawings by hand.

Elementary geometry mainly involves one- or multi-dimensional objects defined by points, lines or areas. Representational geometry attempts to depict these objects in a graphic manner on one plane. When drawing, aids are required, which have been brought together clearly on this panel: Rulers, set squares and French curves.

French curves are used for drawing curved lines such as ellipses and hyperbolas. As the curves of these objects change continually and we do not know how large these curves will be, a French curve has various curved sections that also change continually. When drawing, the French curve must therefore be moved and turned continually to find a part that matches the drawing. Parallel lines can be drawn easily and quickly by placing the T-shaped t-square on one side of a drawing board (a rectangular board to which the paper is clamped fast).

The rulers from the collection of the Technisches Museum Wien (Vienna Technical Museum) are made from wood, as was standard at that time. Today, most are made from plastic. For commercial purposes, they are also often made from metal. However, the art of making polished geometric drawings by hand has fallen by the wayside through the use of computer drawing programs.

Manufacturer: unknown
Date of construction: around 1930

Inv.Nr. 65000
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