Hinks, Arthur R. (Arthur Robert), 1873-1945 · Cambridge, University press · leaf 194
2. Quadripod beacon for tnanyulalion.gcmda-Congo Boundary. Phot. by Capt. E. M. Jack, R.E. TOPOGRAPHICAL SURVEY 141 caused by errors in this setting up and centering. To avoidthese difficulties an excellent form of self-centering beacon hasbeen introduced by the Survey of Egypt. The beacon…
Maps · Surveying
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