Large version of plotting longitude scale? - SailNet Community

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Old 01-19-2010
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Large version of plotting longitude scale?

I'm looking for a larger scale version (e.g. full page size) of the logarithmic longitude scale located at the bottom right of a VP-OS universal plotting sheet, ideally with graduated marks for tenths of minutes.

The goal is to be able to get higher precision when measuring longitude with dividers, as the size of the standard scale is pretty small, especially at higher lattitudes.

Anyone know of such a thing?

Thanks.
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Old 01-19-2010
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I know one thing for sure, and that is one can not make a Xerox copy of a plotting sheet let alone make an enlargement without introducing unacceptable distortion, if you are looking for professional precision.
That is what the powers to be in the Navigation Dept. of the US Power Squadron tell me.

Dick
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