The Silva 70P is a bulkhead mount compass designed for yachtsmen that demand absolute accuracy and a steady card in all conditions.This compass handles unlimited slope of the keel line and a 30º heeling angle. The curved lubber line enables swift and clear reading at a glance without parallax errors. With a main steering scale on the horizontal part and direct reading on the vertical edge,Manufactured from ABS & acrylicm the 70P compass is ideal for boats with a sitting as well as a standing helmsman. It can be mounted at most angles and its compact size (70 mm) makes it suitable for smaller boats.- DOUBLE SCALES - Can be read from front and above- SUITABLE FOR ALL BOATS - Fits in all boat types- CURVED LUBBER LINES - Accurate reading from different angles- COMPACT SIZE - Small and flexible