The German C. Plath sextant is regarded as the "Rolls Royce" of nautical sextants. This is the best sextant that we offer. The telescope has a large objective lens and produces a very bright and clear erect image. There are a pair of levers that when squeezed, pull the micrometer pinion away from the ground rack, allowing fast large angular movements of the index arm. The sextant is shipped with the mirrors correctly adjusted, and further adjustments can be made using three inset adjustment screws. The sextant comes with a beautiful felt-lined hardwood case which is made out of a high quality smooth finish hardwood.