DrawingInstruments : Drawing Instruments

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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: Weber-Schneider planimeter Hi John, This is the original case. The clean design of Baraban-Thomas proportional divider and this case had interested me much. Dan Posted - Wed Apr 24, 2013 7:52 am	danlinealis Send Email
Re: Tamaya 3 arm protractor Ron, Eric, One particular use was for establishing position from three landmarks when conducting hydrographic surveys. The angles between adjacent landmarks Posted - Tue Apr 23, 2013 8:23 am	David Riches weymouthdavid Send Email
Re: Tamaya 3 arm protractor Ron.. As far as I know, the three arm protractor was a maritime navigational aid which allowed a ship to stay on station. It’s been years since I researched Posted - Tue Apr 23, 2013 3:39 am	cowtown_eric Send Email
Weber-Schneider planimeter Hi Dan, Interesting planimeter. A quick translation from the patent description: To determine the surface area of figure `x' (fig. 1), using pointed cursor Posted - Sun Apr 21, 2013 4:20 pm	planimetrica Send Email
Tamaya 3 arm protractor I acquired a Tamaya 3 arm protractor recently and uploaded photos of it in my Ron Blauch photo folder. The age is a question. I'm guessing around WW2 era. Posted - Sun Apr 21, 2013 3:01 pm	ronbo717 Send Email
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