Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 54 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 55
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 53



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 54 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 55 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 56