Brian, If it's not too much trouble, would you post a couple of pics of your Tru-Nord compass and the button compass that you keep in your Shadow III, side-by-side, with maybe a quarter in there for size reference.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.