Duharanira imbere yinganda zisanzwe, duharanira kubyara ubuziranenge bwa granite ya mpandeshatu.Ukoresheje Jinan nziza yumukara granite nkibikoresho fatizo, kare ya granite ya mpandeshatu ikoreshwa muburyo bwiza bwo kugenzura imirongo itatu (ni ukuvuga X, Y na Z axis) yibintu byerekana ibikoresho.Imikorere ya Granite Tri Square Umutegetsi isa na Granite Square Umutegetsi.Irashobora gufasha imashini yimashini nogukora imashini gukora igenzura ryiburyo no kwandika ku bice / ibihangano no gupima perpendicular yibice.