Watch relative bearings change, predict crossing situations, plot offshore fixes with a 3 arm protractor, or check your compass by sun or stars. These are some of the things you can do with a pelorus. Watch relative courses change, predict collision situations, plot offshore fixes with a 3-arm protractor, or check your compass by sun or stars. These are just some of the things you can do with an alidade taximeter. Larger boats have taximeters that are permanently mounted, or that can be mounted on deck. At a smaller size, this portable alidade taximeter performs the same functions. Storage box made of plywood and finished in natural wood tones, its size is 21x21x18 cm. Assembly constructed of aluminium and polyamide and with a 125mm diameter rose marked in one degree increments. The taximeter and its box have an elegant and attractive design and can also be used as a decorative nautical element.