We list both, Physical size 5 in, sextant size ( from pivot of arm ) 4 in. Working in the title means this sextant can be calibrated and used. Please compare feedback when deciding on a purchase.

This item is a NEW brass intricate nautical sextant reproduction with very nice sturdy box . This is one of the favorites.

This is for the person wanting a sextant that is small, sturdy, has box, adjustable mirrors, and is made a little heavier than most.

Why not pay a little more for the difference, this one even has nice velvet lining in the box.

The sextant itself is quite detailed, Slow Motion adjustment with 4 glass filter lenses , and 4 in. swing arm, reflective mirrors, and has velvet lined box.

The " ROSS LONDON ™" is engraved on the frame and handle brass plate.

The arm features a magnifying lens and a slow motion adjuster. The slow motion intricate device allows you to advance the swing arm by a fine adjustments or loosen the screw and use fast motion. The full 120 degree arc is inset with white metal to contrast with the brass, and features individual degree demarcations. Imagine sailing ship captains in the early 1900s using an instrument like this. This heavy brass sextant also features a solid construction and weighs 15oz . Crafted in the style of a century ago, this sextant has a nicely polished and finished wood handle, as well as brass stand legs for upright easy display. All in all, would make a great gift for the sextant enthusiast and novice alike. Certainly a fine item for the sextant, brass, nautical, surveying, engineering instrument, militaria, or other collection - shines on display.