NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: US Navy MK 5 Aboard Small Craft
From: Bill Morris
Date: 2011 Oct 12, 12:10 -0700
From: Bill Morris
Date: 2011 Oct 12, 12:10 -0700
When you're in an aircraft, you cannot hear when the averager stops, so the blank shade drops to let you know that the 2 minutes are up.
Bill Morris
Pukenui
New Zealand
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