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Theories and practical skills for use in optical shops are presented in this rate training manual, prepared for regular navy and naval reserve personnel. Light theories are analyzed in connection with mirrors, prisms, lenses, and basic optical systems. Following fundamentals of mechanical design and construction, maintenance procedures are studied to give a general knowledge of optical repair. Special descriptions are made of such instruments as spyglasses, telescopes, magnetic compasses, azimuth and bearing circles, sextants, stadimeters, telescopic alidades, binoculars, submarine periscopes, and night vision sights. To give enough background for readers, operations of lathes, grinders, milling machines, and drill presses are also discussed. Besides illustrations for explanation purposes, information on the opticalman rating structure is also provided.
In 1871, newly freed slaves established the community of Tamina—then called “Tammany”—north of Houston, near the rich timber lands of Montgomery County. Located in proximity to the just-completed railroad from Conroe to Houston, the community benefited from the burgeoning local lumber industry and available transportation. The residents built homes, churches, a one-room school, and a general store. Over time, urban growth has had a powerful impact on Tamina. The sprawling communities of The Woodlands, Shenandoah, Chateau Woods, and Oak Ridge have encroached, introducing both opportunity and complication, as the residents of this rural community enjoy both the benefits and the challenges of urban life. On the one hand, the children of Tamina have the opportunity to attend some of the best public schools in the nation; on the other hand, residents whose education and job skills have not kept pace with modern society are struggling for survival. Through striking and intimate photography and sensitively gleaned oral histories, Marti Corn has chronicled the lives, dreams, and spirit of the people of Tamina. The result is a multi-faceted portrait of community, kinship, values, and shared history.