Iberian Peninsula 1:4 000 000
Sketch for the contour intervals in contrasting colors. Auxiliary drawing, for reasons of cartographic technique. Watercolor on print. For the Schweizerischer Mittelschulatlas, edition 1932. 31 x 31 cm.
(Imhof, Eduard F 33.4)

Iberian Peninsula 1:4 000 000
Print of hachures and the blue color, for the hypsometric layers and the color of the oceans. Color separation. For the Schweizerischer Mittelschulatlas, edition1932. 31 x 31 cm.
(Imhof, Eduard F 33.6)

Iberian Peninsula 1:4 000 000
Print of the complete map. From the Schweizerischer Mittelschulatlas, edition 1932, page 50/51. 31 x 31 cm.
(Imhof, Eduard F 33.8)

Iberian Peninsula 1:4 000 000 Hill-shading combined with hypsometric colors according to aerial perspective. Eduard Imhof and collaborator. Map from the Schweizerischer Mittelschulatlas, editions 1962-1976. Section.
(Imhof, Eduard O 32)

Schweizerischer Mittelschulatlas
Comparison of the relief representation of hachured maps and maps with relief shading and gradation of the colored hypsometric layers according to aerial perspective. Shown on a map of France 1:4 000 000 (section).
1. Shaded hachuring
2. Hypsometric colors, modified spectral scale
3. Hachures combined with hypsometric colors
4. Oblique hill-shading
5. Hypsometric colors, color value order of "the higher, the lighter"
6. Hill-shading combined with hypsometric colors Plate 6 from the book: Eduard Imhof, Cartographic Relief Presentation, Berlin and New York 1982. Sheet format 26 x 17 cm.
(Imhof, Eduard F 51)