NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Mechanical Maneuvering Board instructions
From: Stan K
Date: 2012 Feb 11, 12:34 -0500
From: Stan K
Date: 2012 Feb 11, 12:34 -0500
Gary,
Your Aircraft Navigation Plotting Tool is described in much more detail in Dutton's Navigation and Nautical Astronomy than my Marine Navigation Plotting Tool, which happens to be a Mark A, Part No. FNC-1. I also have the Marine Navigation Ruler, Mark C, Part No. FNC-3. Both are manufactured by G. Felsenthal & Sons, as is yours.
They are pretty interesting devices in that the grid on them allows you to make fairly accurate angular measurements without the need for a straightedge. I had the thing for years (a "gift" from someone who was getting rid of "junk") but did not start using it until I was making sample problems to test the CPA tool I I added to my computer program, which I told you and Dan Allen about a little while ago (which has since become the MoBoard tool, with more features and less bugs). It proved very handy for that.
It was not very difficult to figure out how to use it, but Dutton's says that instructions were included with each unit. I am just trying to get a copy of these instructions for the sake of completeness.
Stan
Your Aircraft Navigation Plotting Tool is described in much more detail in Dutton's Navigation and Nautical Astronomy than my Marine Navigation Plotting Tool, which happens to be a Mark A, Part No. FNC-1. I also have the Marine Navigation Ruler, Mark C, Part No. FNC-3. Both are manufactured by G. Felsenthal & Sons, as is yours.
They are pretty interesting devices in that the grid on them allows you to make fairly accurate angular measurements without the need for a straightedge. I had the thing for years (a "gift" from someone who was getting rid of "junk") but did not start using it until I was making sample problems to test the CPA tool I I added to my computer program, which I told you and Dan Allen about a little while ago (which has since become the MoBoard tool, with more features and less bugs). It proved very handy for that.
It was not very difficult to figure out how to use it, but Dutton's says that instructions were included with each unit. I am just trying to get a copy of these instructions for the sake of completeness.
Stan
-----Original Message-----
From: Gary LaPook <garylapook@pacbell.net>
To: NavList <NavList@fer3.com>
Sent: Sat, Feb 11, 2012 4:47 am
Subject: [NavList] Re: Mechanical Maneuvering Board instructions
From: Gary LaPook <garylapook@pacbell.net>
To: NavList <NavList@fer3.com>
Sent: Sat, Feb 11, 2012 4:47 am
Subject: [NavList] Re: Mechanical Maneuvering Board instructions
That appears to be a lightly modified common Navy "Chart Plotting Board" used on airplanes that went through several marks, Mk 3, Mk 5 Mk 6 etc. The instructions for these boards are for solving many vector diagram problems necessary in flight. I looked at my instructions and nothing about collision avoidance. But they do describe who to set up and use the board and you can easily figure out how to use if for collision avoidabce.
gl
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