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. 2015 Jan 1;23(3):201–210. doi: 10.1177/1076029615606531

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© The Author(s) 2015

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 4. — Thrombelastograph used by Hartert (H-TEG) to investigate the shear modulus of a blood clot. Photographs of the device (I; not previously published, kindly provided by Dr Heinz Engel). Technical drawings of the device (II; not previously published, kindly provided by Tem Innovations). Diagram showing the basis for calculating G (III), with total fluid volume 360 µL. Part B (darker shading) represents the only portion considered by Hartert and Schaeder² in their calculation of G (parts A and C were omitted). H-TEG device shown in the photographs: manufactured by Fritz Hellige & Co, GmbH, Division of Litton Industries, Freiburg im Breisgau; made in West Germany; cat. no. 104009 01; ser. no. 3790.