A holding device is a tool used to secure an object in place. A CLAMP is a type of holding device that consists of two parts joined together by a hinge or other mechanism, and can be tightened to hold an object in place. A VISE is another type of holding device that consists of two jaws that can be adjusted to grip an object. Finally, a tong is a type of holding device that consists of two arms connected at one end, and can be used to grip an object. All three of these holding devices are commonly used in various industries such as construction, manufacturing, and engineering.