1) Jiometry ọkpọkọ igwe anaghị agba nchara na-enyocha dayameta ọkpọkọ igwe anaghị agba nchara, ọkpụrụkpụ mgbidi na curvature, ogologo n'elu tebụl nyocha nke nwere caliper, micrometer, na gbadaa ụkwụ, ogologo teepu ga-elele. Dayameta dị n'èzí, ọkpụrụkpụ na ogologo mgbidi nwekwara ike iji nha nha akpaka...
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