Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 58 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 59
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 57



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 58 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 59 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 60