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In 1892 French Creek overflowed its banks and flooded Meadville. Singley photographed the damage, developed multiple prints of 30 negatives and pasted them on cardboard mounts bearing the name of Keystone View Company. By 1895 the company had issued approximately 700 different views. [4] In 1898 Keystone began making and selling stereoscopes. [5]
The stationary (outer) swashplate is mounted on the main rotor mast and is connected to the cyclic and collective controls by a series of pushrods. It is able to tilt in all directions and move vertically. The rotating (inner) swashplate is mounted to the stationary swashplate by means of a bearing and is allowed to rotate with the main rotor mast.
The mast foot is tapered so the mast stands firmly in the lower tapered ball bearing. Level with the deck is the mast "bottleneck" where the upper ball bearing rests. By means of a bracket bolted to the deck upper surface the upper ball bearing is kept in place, thereby keeping the mast from being lifted from the lower layer.
In marine navigation, a pelorus is a reference tool for maintaining bearing of a vessel at sea. It is a "simplified compass" without a directive element, suitably mounted and provided with vanes to permit observation of relative bearings. [1] The instrument was named for one Pelorus, said to have been the pilot for Hannibal, circa 203 BC.
omni-bearing selector OCA obstacle clearance altitude OCC Operations control center: OCCM on condition / condition monitored components OCH obstacle clearance height OEI one engine inoperative OEM original equipment manufacturer: OFZ Obstacle Free Zone OGV outlet guide vane OHM overhaul manual OIS obstacle identification surface
The top on a traditional square rigged ship is the platform at the upper end of each (lower) mast. [1] This is not the masthead "crow's nest" of the popular imagination – above the mainmast (for example) is the main-topmast, main-topgallant-mast and main-royal-mast, so that the top is actually about 1/4 to 1/3 of the way up the mast as a whole.
The R version can be distinguished from their sister 37/40+ and XL by an "R" in the length code in the HIN, the exception being the first three 37R built, Fastrack (now Holo Nui), hull number 2 in the 37/40 series, the second 37R, "The Third Wave", hull number 4 in the series (scrapped after a hard grounding in 2016), and the third 37R ...
Azimuth or bearing B Bravo: Swallowtailed, gules "I am taking in or discharging or carrying dangerous goods." (Originally used by the Royal Navy specifically for military explosives.) C Charlie: Azure, a fess gules fimbriated argent "Affirmative." [a] [b] Magnetic bearing: D Delta: Or, a Spanish fess azure "Keep clear of me; I am maneuvering ...
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