Jiajia inorema huwandu rectangular huremu akagadzirirwa kuve akachengeteka uye anoshanda maitiro ekushanda, achivaita iwo mhinduro yakanakira yekudzokorora maitiro ekugadzirisa. Huremu hunogadzirwa zvinoenderana neOIML-R111 zviyero zvezvinhu, mamiriro epasi, density, uye magineti, aya maremu ndiyo sarudzo yakakwana yekuyera zviyero marabhoritari uye National Institutes.