Marmura square gauge yana da madaidaiciya daidai akwatin tsari hadewa don dubawa na madaidaiciya kusurwa, dacewa da high daidaito inji da kayan aiki dubawa da kuma dubawa na non-verticality tsakanin inji kayan aiki. Marmura square gauge ne da aka yi amfani da marmura aiki, marmura ne re-crystallized dutsen lime, da manyan abubuwa ne CaCO3. Lime dutse softens a high zafi da kuma matsin lamba, da kuma re-crystallized samar da marmara a lokacin da ma'adinai da ke ciki ya canza. Marmara ne wani degenerate dutse da asali dutse a cikin crust ta hanyar high zafi da matsin lamba tasiri a cikin crust. Tasirin ƙarfin ciki na duniya yana haifar da canje-canje na nau'ikan duwatsu daban-daban na asali, watau canje-canje na tsarin, tsarin da abubuwan da ke cikin duwatsu na asali. Sabbin duwatsu da aka tsara bayan canji ana kiran duwatsu masu canji. Marmara yafi ƙunshi quartzite, limestone, snakeware da kuma whitewash. Babban kayan aikinsa ya fi yawa ne calcium carbonate, wanda ya kai sama da kashi 50%. Saboda marmura yawanci yana ƙunshe da ƙarancin halitta, kuma calcium carbonate a cikin yanayi yana da tasirin carbon dioxide, carbide, ruwa, kuma yana da sauƙin iska da narkewa, don haka farfajiyar tana rasa haske da sauri. Marmara ne yafi amfani da aiki a cikin daban-daban siffofin, farantin, da dai sauransu. Saboda haka marmara square sikelin yana da halaye na rashin deformation, high tauri, karfi wear juriya, juriya lalata, high zafin jiki juriya da sauransu.