Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 48 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 49
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 47



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 48 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 49 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 50