Raymarine 'Tacktick For Racing' Range. No holes or wires! You want the best chance of crossing the line first. This means you need instant access to accurate data, and displays that are absolutely reliable. Tacktick instruments excel on all fronts. They display all the data you'll ever need and have user-configurable pages, crucial for racing performance with no wires through your hull or down your mast. The Tacktick Micro Compass gives you a massive racing advantage. It is light, easy to read, reliable and precise. The Tacktick Micro Compass's tactical scale gives you clear stable figures for port and starboard tacks. When tacking, the readings are always the same, meaning you never have to remember numbers. This also comes with mast bracket for easy installation.