The invention concerns a device for measuring pressure in two points of a fluid flow, comprising: a frame (10) consisting of two plates (12, 14) comprising each two planar surfaces, one outer (12a, 14a) and the other inner (12b, 14b), and wherein one of the plates (12) is perforated with recess (22)...http://www.google.com.au/patents/US6898981?utm_source=gb-gplus-sharePatent US6898981 - Device for measuring pressure in two points of a fluid flow
