INTERFERENCE PREVENTION TYPE DEVICE FOR MEASURING THE EXTENSION OF A BOLT, WHICH IS FOR IMPROVING DIFFICULTIES OF THE INSERTION OF THE MEASUREMENT ROD CAUSED BY THE INTERFERENCE WITH AMBIENT STRUCTURE WHEN MEASURING THE EXTENSION OF THE BOLT

摘要

PURPOSE: An interference prevention type device for measuring the extension of a bolt is provided to utilize a foldable structure of a measurement rod of predetermined length, thereby measuring the extension of a large bolt generated in a portion where interferences are generated.;CONSTITUTION: An interference prevention type device for measuring the extension of a bolt comprises a measurement rod(10), a holder(20), and a gauge(21). The measurement rod has predetermined length to be inserted into a slot hole formed on the bolt. The holder supports the upper part of the measurement rod. The gauge is joined to one side of the holder in order to measure the height of the measurement rod inserted into the inside of the holder. The measurement rod is divided into two parts and the two parts are mutually connected.;COPYRIGHT KIPO 2013