The B&K Precision Component Comparator is a high-quality tool designed for precise comparison of components in various industries. With a focus on accuracy and reliability, this device ensures that measurements are reliable and consistent. The component comparator allows for easy comparison of dimensions, tolerances, and other important characteristics, making it a valuable tool for quality control and inspection processes. The B&K Precision brand is known for its precision instruments, and this component comparator is no exception, providing users with confidence in their measurements. Don’t really know much about this piece. I got it at an auction. Does power on just fine.