spring joint caliper, a tool used for making
Function: Spring calipers are used to measure the distance between two opposite sides of an object. They are a type of transfer measuring tool, meaning they do not have a built-in scale and must be used with a ruler or micrometer to get a reading.
Types: There are two main types of spring calipers: outside calipers, which measure external dimensions like the diameter of a rod, and inside calipers, which measure internal dimensions like the diameter of a hole. The tool in the image appears to be an outside caliper.
Mechanism: The legs of the caliper are opened and closed using an adjusting nut, and a bow spring provides tension for precise settings.
Applications: They are commonly used in various industries such as metalworking, woodworking, machining, and engineerin