Compass Housing (45mm D)

I have tested at least 20 different compasses purchased from E-Bay and this is by far the best I have found (Liquid filled and 100% Accurate), the only problem with it is it had no holder or mount, So I designed this so it can be attached to a zipper, back pack or Diving gear.
!Just added a Para Cord Bracelet Version
https://www.ebay.co.uk/itm/Portable-Survival-Liquid-Filled-Button-Compass-for-Hiking-Camping-Outdoor-Wild/202129208623?ssPageName=STRK%3AMEBIDX%3AIT&var=502121322878&_trksid=p2057