 If necessary, the right angle can be laid out to the right aud the rauge taken to the left, by reversing the operation herein detailed. some well-defined portion of the object. He then plants the picket С between his toes, and should verify the accuracy...  Notes on Military Surveying and Reconnaissance - Page 118by William Paterson (Lieut.-Col.) - 1882 - 146 pagesFull view - About this book
 | United States. Army. Ordnance Department - 1879 - 832 pages
...the operation herein detailed. some well-defined portion of the object. He then plants the picket С between his toes, and should verify the accuracy of...to or from him. No. 1 has thus planted the picket С at the right angle between О and A ; in other words, О С A is a right angle. He now turns the... | |
 | United States. Congress. House - United States - 1880 - 842 pages
...the operation herein detailed. some well defined portion of the object. lie then plants the picket С between his toes, and should verify the accuracy of...to or from him. No. 1 has thus planted the picket С at the right angle between 0 and A ; in other words, О С A is a right angle. [Ic now turns the... | |
 | War office - Fire control (Gunnery) - 1882 - 48 pages
...verified by resting the left hand on top of picket, care being taken to keep the mirrors exactly over the picket, and looking through the instrument again ; any slight error can then be rectified by pushing the head of the picket forward or backwards. EXERCISE 2. The practice should now be performed... | |
 | William Hamilton Richards - Military topography - 1883 - 256 pages
...glass N is immediately over the picket). On looking through the instrument again any slight error can be rectified by forcing the head of the picket to or from him. The placing of picket C is performed thus. An assistant, as soon as he sees the picket B planted, lays... | |
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