NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fw: Image of Sextant Used by Worsley
From: Brad Morris
Date: 2009 Mar 6, 17:00 -0800
From: Brad Morris
Date: 2009 Mar 6, 17:00 -0800
Hi George The helical screw is mounted on a spring mounted hinge, which keeps the screw in contact with the teeth milled into the back of the arc. When you press the release, the screw lifts off of the arc and you can easily move the helical screw to another section of the arc. You could (with a lot of effort) use the adjusting knob to move the vernier from one end of the arc to the other, but who would want to? Best Regards Brad --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---