432-677 is a vice fixture for mounting to the base of a test stand when performing tension and compression tests. It has three jaws, two vertically spaced on one side, clamping with a single jaw at mid-height. The double jaw is precisely adjusted with a screw-action handle to set it in a fixed lateral position. The single jaw is moveable with it being locked and unlocked into place by a toggle-action lever. This allows for quick loading and release of the test sample.