A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Modris Fersters
Date: 2021 Jun 18, 07:00 -0700
I am very glad to receive your comments. Your Astra IIIB, as I have heard, is very good instrument. It will be exciting to see your results.
PS. The movement of index arm in direction perpendicular to frame can be seen even with naked eye as very, very small lift, when micrometer is turned clockwise.