NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
The Wild T4 Theodolite - Don't Sneeze!
From: David Pike
Date: 2016 Mar 29, 03:36 -0700
From: David Pike
Date: 2016 Mar 29, 03:36 -0700
We read on the net 'The Wild T4 theodolite, with which angles to a tenth of a second of arc could be achieved in the horizontal plane'. How do they manage that? That's an almost unbelievable two inches in 60nm. DaveP
