The GEM Model 399 Jeweled Dial Indicator is a precision tool designed for metalworking inspection and measurement. Made in the United States, this dial indicator features a .001" range and a .200" diameter. The brand, GEM, is known for producing high-quality precision measuring instruments, making this indicator a reliable choice for professionals in the CNC, metalworking, and manufacturing industries. Its jeweled dial design ensures accurate readings for a variety of inspection tasks.