Jones P R, Marshall W A, Branson S J
Ann Hum Biol. 1979 Mar-Apr;6(2):159-62. doi: 10.1080/03014467900003491.
The Harpenden skinfold caliper has been modified so as to give a simple digital display or an output which may be fed directly to more sophisticated equipment (e.g. digital computer or X-Y plotter) for further analysis.