Karamin yanki ɗayashrinkable hannun rigana ƙarancin diamita na waje da aka yi daga ko dai wani abu mai ƙarfi ko

wani abu mai rage zafi yana da ƙwaƙwalwar roba kuma an daidaita shi don kiyaye shi zuwa ƙarshen kebul na lantarki

da/ko bututun bututu yana da guda ɗaya ko fiye da na'urorin lantarki da/ko bututun da ke shimfidawa don samarwa

wani shamaki ga kwararar iskar gas ko tururi ta wurinsa.Hannun yana ƙunshe da rami a ƙarshensa wanda lokacin

hannun riga yana cikin yanayin faɗaɗa an daidaita shi don karɓar ƙarshen dam ɗin.Hannun ya ƙunshi ɗaya ko fiye

tashoshi na ciki a kishiyar ƙarshensa waɗanda ke rabu da juna ta bangon da ke kai tsaye ko

a kaikaice mai alaƙa da bangon ragowar hannun riga kuma an daidaita su don ba da izinin ɗaya ko

ƙarin madugu da/ko bututu don tsawaita su daga ƙarshen dam a cikin rami.