Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 56 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 57
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 55



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 56 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 57 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 58