Line loss checking instrument convenient to install

The utility model discloses a line loss checking instrument convenient to install, which relates to the technical field of checking instruments, and comprises a first clamping ring and a second clamping ring, a rotating mechanism and a handle holding mechanism are arranged between the first clamping ring and the second clamping ring, a plurality of feeding mechanisms are arranged on the first clamping ring and the second clamping ring, and the feeding mechanisms are fixedly connected with elastic ball mechanisms. A distance detection sensor is arranged in the elastic ball mechanism, a synchronizing mechanism is arranged between the feeding mechanisms, suction of the first clamping ring and the second clamping ring can be achieved through the holding handle mechanism, meanwhile, holding can be facilitated, the position of the elastic ball mechanism can be adjusted through the feeding mechanisms, and the clamping ring can be conveniently clamped. According to the invention, the line loss of cables with differen