The only compass I could find in my catalogue collection are the Ritchie brand.
The Gobemaster Steel boat compass , some are shock mounted others are not.
I don't know if the numbers are Ritchie numbers or catalog but ,
RIT B 453 5in card $1024
RIT B 463 6 in card , $1146.
B453 has 3 1/3 sphere,, B 463 has 4 inch
YB-500 $787 5 inch card , The YB 500 and D 5S has 3 1/2 spheres 500 and 600 sre not shock mounted.
YB 600 $941 6 inch card , The YB 600 and D - 6S has 4 inch, larger are availiable
D 5S $1512 5 inch card
D 6S $1850 6 inch card
$8.00 extra for 24V or 32V
Pricing is from my friendly commercial supply store shipping is extra.
The do not sell retail.
-- Edited by FF on Saturday 3rd of September 2011 06:01:00 AM