In one aspect of the invention, a builder’s measuring and marking tool is provided. The book includes a plurality of pages, each page having a written passage printed thereon and a respective puzzle piece removably attached thereto. In some embodiments, the occluding devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. The connector connects a service line of an extracorporeal circuit to a pressure sensor of a dialysis machine. Such compounds are represented by Formula I as follows:wherein R1, R2, R3, L, X, and Y are defined herein. The field lines extend in the shape of an arch.