NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: help..astra sextant
From: Ken Gebhart
Date: 2003 Dec 31, 10:19 -0600
From: Ken Gebhart
Date: 2003 Dec 31, 10:19 -0600
on 12/30/03 9:08 PM, Murray Campbell at murraycamp@YAHOO.COM wrote: > Hello..new to list and to celestial nav, so apologies > if my question is uninformed... > > I bought an old Astra (Nova GLH130-40). Looks like it > was in great shape to start with but packaged poorly > and knocked around quite badly in shipping :-( > > The upper screw holding the handle on is loose. It > looks like the only way to get at it is to take off > the index arm, which scares me. Is this something > that can be done? There is a plastic cover over a > large screw, also a collar threaded on with three > holes to turn it by... > > The pieces of the horizon mirror have slid around a > bit too, i will try to read up on how to adjust it and > then check the index error..everything else seems to > move freely and work...should i be really upset about > this or will this sextant still be functional / > accurate?? what else should i be checking?? the optics > and filters and mirror silvering all seem good and the > mic turns almost perfectly freely > > thanks so much for your help....murray > > __________________________________ > Do you Yahoo!? > Free Pop-Up Blocker - Get it now > http://companion.yahoo.com/ > Murray, Do not remove the arm from the frame. Instead, place the arm at about 115 deg on the scale. Then remove the lower of the 3 screws that hold the index mirror on the arm. A small screwdriver may be inserted through the screw hole to engage the screw holding the handle. You won't be able to exert much torque, but it will tighten the screw enough. Ken Gebhart