Case Spring Vise
The Boss case spring tool, shown in Fig. 50, is a very handy little tool. By turning the thumb screw you can bind the spring in the desired position and hold it there. until the screw is inserted in its proper place. It will be found much handier than the ordinary plyer-shaped tools designed for the same purpose. Another form of case spring vise is Hall's, which is shown in Fig. 51.