> Date: Tue, 23 Mar 1999 22:37:46 -0800 > To: [email protected] > From: "Slawomir K. Grzechnik" <[EMAIL PROTECTED]> > Subject: Re: Sun Compass
> So far as I know the sun compass was in use in North Africa only. The > compass was very specific, it was equipped with the plate engraved with the > so called Weir Diagram which consists of concentric ellipses. The diagram's > main purpose is determination of azimuth with few simple actions. Accuracy > is about 0.3 degree Polish astronomer Ludwik Zajdler in his popular book. ``The History of Clock'' wrote, that sun compass based on the Weir's Diagram was used by Americans not only in North Africa but also in the Philippines. Best regards Krzysztof Kotynia
