Twisting Thread Model

Code 713 Cone penetrated by cylinder (right-angled), with nets of surface; Height: 200 mm

Code 239/Ze Cone with four detachable section parts. Shapes of section planes are: circle, ellipse, hyperbola and parabola in different, transparent colours. All parts are centered. Height: 300 mm

Code: 6 Cone with ellipse and two spheres of contact; Height: 260 mm

Code: 9 Double cone with spheres of contact and hyperbola section; Height: 235 mm

Code: 240/Sb 9 piece set of geometrical bodies, colored transparent. All geometrical bodies as shown in set 240/Sa: Prisms red, pyramids green, cylinder, cone and sphere blue.

6 piece set of Geometrical bodies with sections Rectangular prism, 3-sided prism, square prism, Heights: 200 mm; 4-sided pyramid, cone, cylinder, Heights: 100 mm

Code: 250 Model for the projection of a body: The body to be projected rests on a stand in a three-dimensional corner where the vertical walls display front view and side view of the body. The walls are collapsible onto the horizontal projection plane describing the top view.

Set of models to determinate the true size of plane sections: Cone, cylinder, 4-sided pyramid and 5-sided irregular prism, with oblique sections Heights: 210 mm; Base with hinge and 8 transparent laminae (screen printed) showing the projection lines

Code: 303 9 piece set of models with nets of surface in suitcase: Cube (100 mm), square pyramid (100 mm), cone (120 mm), square prism (150 mm), rectangular prism (200 mm), cylinder (150 mm), tetrahedron (150 mm), 6-sided pyramid (150 mm), 4-sided pyramid (200 mm)

Code: 655 4-sided pyramid, detachable, with horizontal + oblique section; Edges: 200 mm