NavList:

   

Reply

I have not seen the non-working ornamental reproduction sextants but
are the copies of genuine historical instruments?

It makes me wonder how long it will be before we can economically copy
metal sextants using computer controlled tools, or plastic ones using
additive manufacture.

Bill

On 3 June 2017 at 06:48, Noell Wilson  wrote:
> I just searched Gustav Heyde, Dresden and got a lot of credible hits - as
> opposed to eBay hanger ons.
>
> One was:
> Gustav Heyde Dresden Telescope ca 1896 - 1900
> Reading the history of Steinmeyer Group Company, we learn:
> In 1872, when Gustav Heyde founded "Gustav Heyde - Mathematisch-mechanisches
> Institut Optische PrÃcizions-WerkstÃtten, his first products were optical
> components. Soon these were followed by circular dividing engines, the prism
> grindery, and industrially manufactured photographical lenses. By the start
> of the 20th century, the continuously growing company already sold its
> products worldwide including manufactured astronomical instruments, optical
> systems and geodesic measuring instruments. In 1912, the Company counted 200
> employees.”
> After the war, in 1948 the Gustav Heyde company changed name -VEB Optik
> Feinmess Dresden . Later, in 1970 the Company became a part of the Veb Carl
> Zeiss Jena. Finally, in 1992 Feinmess Dresden has became a part of
> Steinmeyer Group
> The Gustav Heyde Company published price list catalogues. We have found some
> - price lists for; Astronomical Instruments - in March 1905, Optics -
> January 1909, Part machines and auxiliary instruments - February 1911 and
> Astronomical Instruments -December 1912.
>
> Regards, Noell
>
> 



-- 
Professor of Applied Mathematics
http://www.maths.manchester.ac.uk/bl

   

Reply