A precision measuring instrument used to accurately measure the wall thickness of tubing and pipe. It consists of a u-frame with micrometer. The fixed anvil is either semispherical or cylindrical in shape.
NSN 5920-00-518-1847
NSN 4140-01-617-5918
NSN 5945-01-043-9152
NSN 5920-01-088-8312
NSN 6650-01-100-3185
NSN 4140-00-076-4088
NSN 5985-01-449-1679
NSN 5835-00-411-6344
NSN 5855-00-327-2061
NSN 6685-01-233-7751
NSN 2925-00-098-4165
NSN 5965-01-551-6469