ri als ) ▁ ▁History ▁ ▁Metro log ical ▁ ▁Metro log ical ▁py ram id ology ▁dates ▁to ▁the ▁ 1 7 th ▁century . ▁John ▁Gre aves , ▁an ▁English ▁math ematic ian , ▁astronom er ▁and ▁anti qu arian , ▁first ▁took ▁precise ▁measurements ▁of ▁the ▁Great ▁Py ram id ▁at ▁G iza ▁using ▁the ▁best ▁mathematical ▁instruments ▁of ▁the ▁day . ▁His ▁data ▁was ▁published ▁in ▁Py ram id ograph ia ▁( 1 6 4 6 ) ▁which ▁the or ized ▁a ▁geometric ▁cub it ▁was ▁used ▁by ▁the ▁build ers ▁of ▁the ▁Great ▁Py ram id ▁( see : ▁Egypt ian ▁royal ▁cub it ). ▁While ▁Gre ave ' s ▁measurements ▁were ▁objective , ▁his ▁met ro log ical ▁data ▁was ▁later ▁mis used ▁by ▁numer olog ists : ▁ ▁John ▁Taylor ▁and ▁the ▁golden ▁ratio ▁ ▁In ▁the ▁mid - 1 9 th ▁century , ▁Friedrich ▁Rö ber ▁studied ▁various ▁Egypt ian ▁py ram ids ▁which ▁he ▁linked ▁to ▁the ▁golden ▁ratio . ▁This ▁led ▁py ram id ologist ▁John ▁Taylor ▁to ▁the or ize ▁in ▁his ▁ 1 8 5 9 ▁book ▁The ▁Great ▁Py ram id : ▁Why ▁Was ▁It ▁Bu ilt ▁and ▁Who ▁Bu ilt ▁It ? ▁that ▁the ▁Great ▁Py ram id ▁of ▁G iza ▁is ▁related ▁to ▁the ▁golden ▁ratio ▁as ▁well . ▁Although ▁the ▁Great ▁Py ram id ' s ▁measurements ▁have ▁found ▁to ▁be ▁within ▁the ▁margin ▁of ▁error , ▁the ▁connections ▁between ▁ancient ▁Egypt ▁and ▁the ▁golden ▁ratio ▁have