NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: The Wild T4 Theodolite - Don't Sneeze!
From: Bill Morris
Date: 2016 Mar 29, 16:20 -0700
From: Bill Morris
Date: 2016 Mar 29, 16:20 -0700
<<How do they manage that?>>
65 power telescope, precision central bearing, large circle engraved on glass, optical micrometers, simultaneous readings on opposite ends of diameter, repetition, and very great care in making readings.
Bill Morris
Pukenui
New Zealand
