Hinks, Arthur R. (Arthur Robert), 1873-1945 · Cambridge : University press · leaf 188
observed at each station,neglecting ail others. The triangles must be well conditioned : that is to sdy, theymust be strong in shape, having no angles less than 30° about,and if possible none less than 40°. The size of the triangles willdepend so much on the nature of the country that no… … I. Reconnaissance ladder on the march.
Maps · Surveying
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