Boat owners, this Autonautic bulkhead mount compass is some seriously professional navigation equipment! The 85mm direct reading dial is crystal clear and easy to read, plus it includes an integral clinometer that sailboat enthusiasts will particularly appreciate. What's really impressive is the global balance system - unlike many compasses that need adjusting for different navigation zones, this one works perfectly anywhere in the world without special balancing. The 12V incandescent night lighting means you can navigate safely after dark, with power cables that connect right to your boat's dashboard. The construction quality is top-notch too - extra hard polymer domes with UV protection, high-tech polymer bowls, and everything made in Barcelona with over 45 years of craftsmanship behind it. Important installation note: you'll need an 85mm (about 3.35 inch) hole for recessed mounting, so measure carefully before ordering! This compass isn't just for pleasure craft either - it's suitable for small commercial vessels, lifeboats, and rescue boats, meeting European MED, USCG, and international safety standards. Backed by a 5-year warranty and designed to be 100% repairable, this is one of those investments that'll serve you reliably for years of safe navigation in all sea conditions.