Compass site

Found this site some may have it already but for those that don't plenty of info on all types and makers of compasses.
https://www.google.com.au/url?sa=t&r...sIav_l4qQOzBYw

Who'd have believed that there was sooooooo much info available on the humble prismatic compass. Even harder to believe is that someone a) collects them and b) collated/researched all this info. But, like they say, some people collect man-hole covers! But interesting none the less. Thanks for that Cinders