Mitutoyo 139-177 Tubular Inside Micrometer with extension is a standard single rod type inside inch micrometer. Features interchangeable extensions in a hollow pipe design, and it has the following specifications.
● Range: 100 to 2100mm
● Accuracy: ±(3+n+L/50)µm
● Graduation: 0.01mm
● Travel of Micrometer Head: 25mm
● Measuring Face: Carbide
● Measuring Method: 2-point
● Extension Pipes: 25mm, 50mm, 100mm, 200mm, 400mm (4 pieces)