CASSENS & PLATH PROFESSIONAL Sextant

The PROFESSIONAL sextant from Cassens & Plath is a precision angle measuring instrument for astronomical positioning developed for commercial shipping. It is type-approved by the Federal Maritime and Hydrographic Agency Germany (Bundesamt für Seeschifffahrt und Hydrographie - BSH) - see further down on this page under "Downloads & Information".

The sextant with 4x40 mm telescope , manufactured in Germany, is optionally equipped with a traditional split-view mirror or a full-view mirror and with or without illumination.

As with all Cassens & Plath sextants, the radius of the arc complies with international standards and fulfils the accuracy tolerances.

The sextant frame is milled from a 5.5-kilogram brass plate and ultimately weighs 600 grams. After milling, the frame is heated in an oven, levelled, ground and engraved. Any deformations that may occur as a result of milling and heating are straightened by light and precise hammer blows. Finally, the stress-free strut body is stove-enamelled black and then the individual components are mounted on the frame.

The telescope has a 4x magnification and 40 mm objective aperture. The seven swivelling shade glasses are made of plane-parallel neutral glass. The adjustable, high-quality mirrors are of tested flatness.

The sextant is supplied in a lightweight plastic case. A quality certificate is included.