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F146 Glass field type-E. 6-power, and glass field type-EE, (Navy) F147 Compass, prismatic, M1918, (Keuffel and Esser type) M4 Collimator Sight, used for both indirect fire and direct lay missions. F149 Instrument, Azimuth, M1918, M1918A2, M1 (Mils) F150; F151; F152 Arms scale M1906; F153 Corrector, wind, sound ranging, M1
The modern industrial sight glass is a glass disk held between two metal frames, which are secured by bolts and gaskets, or the glass disc is fused to the metal frame during manufacture. The glass used for this purpose is either soda lime glass or borosilicate glass , and the metal, usually a type of stainless steel, is chosen for desired ...
For example, most modern gearboxes require a GL-4 oil, and separate differentials (where fitted) require a GL-5 oil. While they take the same form, the viscosity grades for gear oils are on a different scale than the viscosity grades for an engine oil. The viscometrics for gear oils are standardized in SAE J306.
Oil and gas separators can have three general configurations: vertical, horizontal, and spherical.Vertical separators can vary in size from 10 or 12 inches in diameter and 4 to 5 feet seam to seam (S to S) up to 10 or 12 feet in diameter and 15 to 25 feet S to S. Horizontal separators may vary in size from 10 or 12 inches in diameter and 4 to 5 feet S to S up to 15 to 16 feet in diameter and ...
Total face width is the actual dimension of a gear blank including the portion that exceeds the effective face width, or as in double helical gears where the total face width includes any distance or gap separating right hand and left hand helices. For a cylindrical gear, effective face width is the portion that contacts the mating teeth.
The mirror landing aid was a gyroscopically controlled concave mirror on the port side of the flight deck. On either side of the mirror was a line of green coloured "datum lights". A bright orange "source" light was shone into the mirror creating the "ball" (or "meatball" in later USN parlance) which could be seen by the aviator who was about ...
Module is a direct dimension ("millimeters per tooth"), unlike diametral pitch, which is an inverse dimension ("teeth per inch"). Thus, if the pitch diameter of a gear is 40 mm and the number of teeth 20, the module is 2, which means that there are 2 mm of pitch diameter for each tooth. [56]
Cast aluminum road wheels were used to save weight. The armor was improved, at 6 inches (155 mm) on the front glacis and mantle of solid rolled homogeneous armor, while it was 4.3 inches (110 mm) on the M48. Power was provided by the AVDS-1790-2A engine, CD-850-5 cross drive transmission and the T97E2 track assembly as used on the M48A3. [53]