Group Information- Members: 392
- Category: Collecting
- Founded: May 13, 2001
- Language: English
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Description
Welcome to everyone interested in drafting and drawing instruments, and/or related tools and materials. The Charter:
This group provides an open forum for people who collect and/or use these beautiful instruments. We're here to exchange information, history, techniques, news, and anecdotes on all aspects of the subject. While many members are collectors, anyone with an interest in the subject is welcome to participate. We are always interested in hearing from people who have used these instruments and materials in their careers.
The Disclaimer:
We only moderate membership. Messages are unmoderated, and I hope to keep it that way, so please exercise common sense and courtesy. You are welcome to post messages about items for sale or swap, but please refrain from using this forum to promote auctions or other commercial operations. Please note that any offensive, commercial, or off-topic posts will be deleted without notice.
Thanks for visiting and participating.
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Re: Unusual beam compass
I have posted two further photos following some experimentation this morning. First I made some measurements and some simple calculations to establish that the
Posted - Mon May 7, 2012 12:41 pm
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David Riches
weymouthdavid
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Re: Unusual beam compass
Hello Ken & NIck, Thanks for some more interesting suggestions. Firstly NIck, the cranked arm freely rotates about the pin and does not lock in any one
Posted - Sun May 6, 2012 11:04 am
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David Riches
weymouthdavid
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Re: Unusual beam compass
We are of course all guessing here but regarding item 1. I would picture the adjustable arm as being a fine adjustment as it would be difficult to adjust the
Posted - Sat May 5, 2012 5:55 pm
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collectingken
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Re: Unusual beam compass
Hello David, I saw this piece on ebay but had spent my instrument allowance for the month so did not bid. I seem to remember seeing one of these on ebay once
Posted - Sat May 5, 2012 11:22 am
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mrmixer2006
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Re: Unusual beam compass
Robert, Thanks for your thoughts on this, however I think it unlikely it was for metal work for a number of reasons: 1. The case definately has recesses for
Posted - Fri May 4, 2012 3:54 pm
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David Riches
weymouthdavid
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