Positioning device for image measuring instrument

The utility model discloses a positioning device for an image measuring instrument. Comprising a supporting and placing platform which is arranged on an external measuring platform and is used for supporting and placing a silicon component to be measured, and a first positioning plate and a second positioning plate which are respectively arranged on the supporting and placing platform, and the positioning area is formed between the first positioning plate and the second positioning plate and is used for positioning the to-be-tested silicon component when the to-be-tested silicon component is placed on the supporting and placing platform. 本实用新型公开了一种用于影像测量仪的定位装置，包括设于外部测量平台上的用于支撑并放置待测硅部件的支撑放置平台、分别设于所述支撑放置平台上的第一定位板和第二定位板、形成于所述第一定位板与所述第二定位板之间的用于在待测硅部件放置于所述支撑放置平台上时对待测硅部件进行定位的定位区。