Installation tool with integrated visual fault indicator for field-installable mechanical splice connector

Splice 成端 processing is performed and a mechanical splice type optical fiber connector attachment tool which can verify splice 成端 processing in a tolerance limit, It has a power supply, a connector holder, an one form visual fault localizer (Visual Fault Locator) provided with an optical transmission element, and a display that displays a 成端 processing state. It is constituted so that an adapter may accept a connector and may carry out position 合わせ of this at an optical transmission element, As a result, in order for an optical transmission element to keep a predetermined distance, and to make it located from a connector and to make light energy spread from an adapter to a 成端 treatment area of a connector along with a stub optical fiber, a connector and optical-communications relations are made.