Akwatin takalmi wani ƙaramin kwali ne ko akwatin filastik da ake amfani da shi don adanawa ko ɗaukar takalma. Yawanci yana da siffar rectangular da murfi mai ɗaure, kuma galibi ana amfani dashi don adana wasu ƙananan abubuwa kuma. Hakanan za'a iya amfani da kalmar "akwatin takalma" gabaɗaya don komawa ga kowane ƙarami, akwatin rectangular wanda yayi kama da akwatin da ake amfani da shi don adana takalma.