Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 22 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 23
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 21



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 22 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 23 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 24