W. A. Schmidt, “The Surveyor’s Cross,” Professional Surveyor Magazine, 2007. http://www.profsurv.com/magazine/article.aspx?i=1803

has been cited by the following article:

• TITLE: An Ancient Rangefinder for Teaching Surveying Methods

  AUTHORS: Amelia Carolina Sparavigna

  KEYWORDS: Telemetry; Rangefinder; Ancient Rome; Teaching

  JOURNAL NAME: Engineering, Vol.4 No.9, September 28, 2012

  ABSTRACT: Rangefinders are instruments used for ballistics and for surveying in general. Here we propose a discussion of some of them, ranging from the ancient Rome to the modern methods. Using an ancient roman artefact as a model, we can prepare a rangefinder at no cost for teaching surveying methods to students of engineering and military schools.