New from 2003 is this exciting and revolutionary new product from Sifeba products in Australia. The NAV-AID PLUS solves the most troublesome aspects of visual navigation, off-course heading corrections and unexpected diversions and offers the extra benefit, at little extra cost, of two instruments in one. An in-built circula...

New from 2003 is this exciting and revolutionary new product from Sifeba products in Australia.The NAV-AID RULE solves the most troublesome aspects of visual navigation, off-course heading corrections and unexpected diversions. This Patented product gives the heading change from present position direct to the destinatio...