Decca Vernier pointer
Vernier pointer (in Decca)
The pointer, on the lane identification meter, which indicates in turn the correct lane number for comparison with the appropriate Decometer.
The vernier pointer is in the form of a six-pointed star and the reading is taken from the arm contained in the sector pointer.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM