Capillary Tube Calibrator and Trouble Shooting Calculator

One side of this tool is used to translate the equipment manufacturers' recommended capillary tubing into sizes which are readily available. The other side is a troubleshooting calculator that simplifies the job of diagnosing cooling system trouble where the capillary tube is suspect.

The troubleshooter has a column with symptoms, one with possible causes and a window that shows the repair. This item is made of thick cardboard stock with metal corner rivets and is 8.5 inches long by 3.25 inches wide.