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    Re: Make a UPS? PLease ignore my prior post.
    From: Gary LaPook
    Date: 2014 Oct 19, 14:44 -0700
    Pleas don't read my prior post, I made a computation error with the Meridional parts, I will correct and repost.


    From: Gary LaPook <NoReply_LaPook@fer3.com>
    To: garylapook@pacbell.net
    Sent: Sunday, October 19, 2014 10:36 PM
    Subject: [NavList] Re: Make a UPS?

    Or we could use Table 6 of Bowditch which gives the spacing of meridians and parallels. For 34 degrees on degree of latitude is actually equal to 59.891 NM while a degree of longitude is 49.885 a ratio of 0.833 so if spacing then parallels at exactly 60 NM then the Meridians would be spaced at 49.976 NM, only 1/2% difference than using the simpler cosine of the latitude method. 

    The easy was to construct the plotting sheet using the cosine method is to draw parallels equally spaced to represent 60 NM and one horizontal line for the mid-latidude. Then from the intersection of the mid-latitude and the mid-longitude draw a line upward from the mid-latitude line by the number of degrees of mid-latitude. Measure along this angled line by 60 units of latitude (60 NM) and draw in the meridian form this point vertically and this will space the meridian at the cosine of the mid-latitude times 60 NM. This is exactly what Hakel's method shows.


    From: Peter Hakel <NoReply_PeterHakel@fer3.com>
    To: garylapook---.net
    Sent: Sunday, October 19, 2014 8:51 PM
    Subject: [NavList] Re: Make a UPS?

    About two years ago NavList member Greg Rudzinski came up with a way to accomplish this task using my T-Plotter, see:

    Plotting sheet construction with T-Plotter
    Plotting sheet construction with T-Plotter
    In his NavList posting Greg Rudzinski explains how you can construct your own plotting sheet using an updated version of the T-Plotter, that is equipped with a prot...
    Preview by Yahoo
    and links therein.

    Peter Hakel

    From: Samuel L <NoReply_SamuelL@fer3.com>
    To: pmh099---.com
    Sent: Saturday, October 18, 2014 5:41 PM
    Subject: [NavList] Make a UPS?

    Can you tell me how to make a UPS from a blank sheet of paper and properly scale Longitude and latitude (Mercator)?

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