A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Curious sextant add-on
From: David Iwancio
Date: 2020 Oct 21, 11:10 -0700
My hunch is it's a night vision scope with a vacuum tube that has worn with age. In that case, the red beam is an infrared flashlight of sorts that would illuminate things for the scope when ambient light isn't enough..
What is NavList?
You can also join by posting. Your first on-topic post automatically makes you a member.
Enter the email address associated with your NavList messages. Your posting code will be emailed to you immediately.