The utility model provides an examination slide caliper's special measuring tool which the structure is: the vertical support that is provided with on the base, elevating gear installs on the support, installs horizontal anchor clamps on elevating gear's upper portion, is provided with the peculiar shape block on the anchor clamps, the peculiar shape block on be provided with that more than or equal to 2 arranges in proper order and the homogeneous through -hole that distributes, also be provided with the two gage block side by side on the base, the distance of two gage block is the width of slide caliper depth survey pole. The utility model adopts the above structure, through set up the peculiar shape block on having the support of base to use the height of elevating gear adjustment peculiar shape block, exist among the solve prior art because a plurality of gage blocks of a less important use, measure and the operating time that produces is long to a plurality of gage blocks, technical problem that work efficiency is low. The utility model discloses can replace a plurality of gage blocks through one measuring instrument, shorten the examination time, improve work efficiency.