Be applied to long and thin launching tube wall thickness measurement's device

The utility model relates to a be applied to long and thin launching tube wall thickness measurement's device, it includes the chassis, the setting is in chassis left side and be used for the V type supporting seat of the long and thin launching tube work piece that the support level vertically placed, the setting the chassis right side and with the parallel slide rail of long and thin launching tube work piece axial lead, the activity sets up the coaster on the slide rail, the lifting support of vertical setting on the coaster, the setting is at the leading truck at lifting support top, the level transversely sets up the fulcrum round pin axle on the leading truck, its middle part and fulcrum round pin axle articulated linking arm, with the external measurement arm of being connected on the left of the linking arm one end, with the interior gage beam of being connected on the left of the linking arm other end, the setting external measurement arm cantilever end and with long and thinlaunching tube work piece