Amfani da kayan aiki:
Ana amfani da shi don auna ƙarfin da ake buƙata don cire tufa ɗaya ko madauki daga kafet, watau ƙarfin ɗaure tsakanin tulin kafet da goyan baya.
Haɗu da ma'auni:
BS 529: 1975 (1996), QB/T 1090-2019, ISO 4919 Hanyar gwaji don ja da ƙarfin tulin kafet.
Ya dace da gwajin kauri na duk saƙan kafet.
QB/T1089, ISO 3415, ISO 3416, da dai sauransu.
Fasalolin samfur:
1, ma'aunin bugun kira da aka shigo da shi, daidaito zai iya kaiwa 0.01mm.