Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 46 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 47
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 45



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 46 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 47 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 48