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Turning is a term used when referring to moving the level to take an elevation shot from a different location. To "turn" the level, one must first take a reading and record the elevation of the point the rod is located on. While the rod is being kept in exactly the same location, the level is moved to a new location where the rod is still visible.
In 1914 and 1915, the Forestry Quarterly published a series of articles on the use of the Abney level. [6] [7] [8] These tutorial articles remain useful today, but the primary reference for usage is the 1927 Abney Level Handbook. [3] The Abney level is typically used at the eye height of the surveyor, either hand-held or mounted on a staff at ...
The Y level or wye level is the oldest and bulkiest of the older style optical instruments. A low-powered telescope is placed in a pair of clamp mounts, and the instrument then leveled using a spirit level, which is mounted parallel to the main telescope. The term dumpy level (also builder's level) endures despite the evolution in design. They ...
Mount Whitney is the highest summit of the Sierra Nevada, the State of California, and the contiguous United States.. This is a complete list of the 12 summits with elevation higher than 14,000 feet (4,267 m) in the U.S. state of California, with at least 300 feet (91.44 meters) of topographic prominence.
Of the most prominent summits of California, only Mount Whitney exceeds 3000 meters (9843 feet) of topographic prominence. Five peaks exceed 2000 meters (6562 feet), nine peaks are ultra-prominent summits with more than 1500 meters (4921 feet), and 35 peaks exceed 1000 meters (3281 feet) of topographic prominence.
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The FT used a metal-bladed, vertical travel, focal plane shutter with a speed range of 1 to 1/1000 second plus Bulb and flash X-sync of 1/125th second. The Nikkormat F-series had a shutter speed ring concentric with the lens mount, unlike Nippon Kogaku's other manual focus SLRs with a top mounted shutter speed dial.
The Apo–Talomo Range (also known as Mount Talomo) or Talomo Mountain Range in the provinces of Davao del Sur and Cotabato on the island of Mindanao contains the Philippines' highest peak: Mount Apo, at (9,692 ft (2,954 m)). [4] Mount Talomo (8,773 ft (2,674 m)) is one of the top 15 highest mountains in the Philippines. In terms of climbing ...