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Superior Air Parts, Inc. is a Chinese-owned manufacturer of aviation piston engine replacement parts, headquartered in Coppell, Texas, United States. The company has been owned by Superior Aviation Beijing since 2010.
The complete unit is normally mounted on a tripod, and the telescope can freely rotate 360° in a horizontal plane.The surveyor adjusts the instrument's level by coarse adjustment of the tripod legs and fine adjustment using three precision levelling screws on the instrument to make the rotational plane horizontal.
Mengistu Neway. Mengistu Neway (1919 – 30 March 1961) was an Ethiopian military officer and commander of the Imperial Guard during the reign of Emperor Haile Selassie.He is noted for being one of the early dissidents of the Emperor's regime and for organizing the 1960 coup attempt with his younger brother Germame Neway, for which he was sentenced to death.
In both parts of the pattern, the squares, lines or spaces are precisely one centimetre high. When viewed through an instrument's telescope, the observer can visually interpolate a 1 cm mark to a tenth of its height, yielding a reading with precision in mm. Usually readings are recorded with millimetre precision. On this side of the rod, the ...
A level control valve or altitude control valve is a type of valve that automatically responds to changes in the height of a liquid in some storage system. A common example is the set of ballcocks in a flush toilet , where each stage of the flush cycle is actuated by the emptying or filling of the tank.
1. input airflow; 2. output airflow; 3. valve tubing; 4. valve casing; 5. internal rotor; 6. valve ports, or "knuckles"; 7. rotor spindle. A rotary valve (also called rotary-motion valve) is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. [1]
It is used in surveying and building with a vertical staff to measure height differences and to transfer, measure and set heights. Also called a builder's level or leveling instrument. Fore sight (FS) – short for "fore sight reading", the last staff reading taken before changing the instrument to the other position. It is the staff reading ...
A wooden tripod holding an optical level is set up firmly on the ground. Levelling or leveling (American English; see spelling differences) is a branch of surveying, the object of which is to establish or verify or measure the height of specified points relative to a datum.