Carcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).arcinoembryonic Antigen (CEA). Guide. The carcinoembryonic antigen (CEA) test measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, especially cancer of the large intestine (colon and rectal cancer).
Instructions. Measure the top of the chimney and the length, width and height of the flue. Build the bottom of the mold out of Â¾-inch plywood. Take the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides.Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.ake the measurements of the top of the chimney and add 2 inches so the cap will overhang the chimney by 2 inches on all sides. Cut the plywood to that measurement by using a table saw or circular saw. Create the cutout for the flue.
Make sure there is a cricket if the chimney is 30 inches wide or more. If the chimney is narrow (less than 30 inches wide) and there is no cricket, make sure that the cap flashing on the top side of the chimney extends high enough up the chimney and up the roof. cricket or saddle is typical on a chimney and is required by many authorities when the chimney width is more than 30 inches. The cricket or saddle is a peak that deflects water and snow around the chimney, preventing it from accumulating against the top side of the chimney.