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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Micrometer vernier
From: Tony Oz
Date: 2018 Apr 19, 01:50 -0700
From: Tony Oz
Date: 2018 Apr 19, 01:50 -0700
Peter, have a look here. There is no drum, but some other parts that you've mentioned are there.
Regards,
Tony