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<h2 id="see-also">See also</h2> <ul><li><a href="/facts/Rangefinder/ACNYnqPa">Rangefinder</a></li> <li><a href="/facts/Theodolite/G4ADP1bC">Theodolite</a></li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>United States. Department of the Army (1961). Dictionary of United States Army Terms. Army regulation. Headquarters, Department of the Army. p. 318. Retrieved 2021-05-15. <a href="https://books.google.com/books?id=JJcrAAAAYAAJ&pg=PA318" target="_blank">https://books.google.com/books?id=JJcrAAAAYAAJ&pg=PA318</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> </ol>