In order to describe a spatial body adequately and thereby fulfil a basic principle of exact replication and repeatable production, several views of the body are usually necessary. To do this, bodies are shown in three planes: front view, side view and plan or bottom view. The presentation follows fixed rules that are defined in the standards. Even for simple bodies, the presentation in three planes requires a considerable degree of abstraction ability and spatial imagination on the part of students. This ability is a prerequisite for both creating and interpreting engineering drawings or sketches and is taught by means of geometric models.
The TZ 100 model set provides a learning concept with which to introduce students to the discipline of descriptive geometry.
A 3D frame made of plexiglas enables multiview projection. The models are placed in the middle of the 3D frame. The corresponding view is inserted into each plane of the 3D frame, so that it is possible to directly compare model (workpiece) and drawing.
A total of ten models of varying difficulty are included. One model is made of Plexiglas in order to develop an understanding of hidden edges. The other models are made of aluminium.
The models are precision-manufactured so that measuring exercises can also be conducted. All parts are clearly laid out and well protected in a storage system.
The contemporary multimedia instructional materials are available online in the GUNT Media Center. The core element of the teaching materials is a complete set of drawings for each model. The set of drawings consists of DXF files, STEP files and PDF files.