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Re: The Plane Scale and Stereographic Projection in Early Navigation
From: Robert H. van Gent
Date: 2024 May 29, 08:55 -0700

Hi Robin,

Thanks for your interesting paper on the Plane Scale (also popular among Dutch navigators and known as a pleyn-schaal or pleinschaal).

There are earlier editions of Aspley’s “Speculum Nauticum”, the earliest one appears to date from 1624

Rob van Gent

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