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Re: [ATM] Expanding Question

To: "Anthony Stillman" <atmer@flash.net>
Subject: Re: [ATM] Expanding Question
From: vorblesnak@peak.org
Date: Mon, 24 May 2004 05:07:38 -0700 (PDT)
Cc: atm@atmlist.net
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> In 1837 Lord Rosse had built a lighter weight ribbed back speculum mirror.
> It was found to function without fault.  The ribs were made of a brass
>

I have a book on Optical Workshop Principles originally written in the
19th century, by a Col. Charles Deve.  What I have is a 1943 English
translation.  It has three pages devoted to metal mirror working and
recommends "putty powder" to polish with.  If you would like I will copy
those pages and send them to you.  Sounds like you have a neat project
going.

David Davis
Toledo, OR
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References:
- [ATM] Expanding Question
  - From: Anthony Stillman <atmer@flash.net>

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