Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 32 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 33
Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 31



Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 32 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 33 Fourth Volume - Construction and Use of the Sun Dial - Contents - Page 34