NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Old Sextant on German money
From: Dan Allen
Date: 2007 Mar 12, 07:15 -0600
From: Dan Allen
Date: 2007 Mar 12, 07:15 -0600
On 10 Mar 2007, at 10:02 PM, halboth wrote:
> A heliotrope is a device for reflecting the sun's rays to a distant
> point to aid in long distance observations; a similar device for
> reflecting the moon's rays is called a selenotrope - both are used
> or were used in geodetic surveying. What the vize prefix means ion
> this context, I don't know.
I have a few close up photos of the heliotrope on the money on my
website at:
http://danallen46.homeunix.org/FRGdm.htm
Dan
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