Gargadi Tsawon Hasumiya Crane

Na'urar firikwensin Laser hanya ce ta auna nisa mara lamba, wacce za ta iya auna nisan ma'aikatan da ba za su iya isa ba ko wasu wurare na musamman, kuma ma'aunin ya dace da aminci. Na'urorin firikwensin Laser sun fi dogaro yayin ɗaukar ma'aunin crane.
Na'urar firikwensin Laser daidai yana auna nisan nisa ta hanyar Laser, wanda ke da daidaito mai girma, ya dace sosai don aiki, kuma yana da sauƙin shigarwa. Saboda haka, kuskure na crane girder span, crane girder deflection da diagonal line na dabaran, a tsaye tsawo na crane zuwa ƙasa , crane anti- karo da sauran al'amurran don aunawa da ba da gargadin wuri.