Thorough coverage of theory and applications of optics examines optical glass, light, elements of mirrors, prisms and lenses, construction of instruments, maintenance and more. Discussions include ship telescopes and spyglasses, boresight telescopes, fixed prism gunsight telescopes, magnetic compasses, and many other subjects. Extensive appendixes include a glossary, symbols, and formulas.Reprint of the Opticalman 3 & 2, NAVEDTRA 10215, 1989 edition.