Mitutoyo 139-175 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 1300mm
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 (2 pieces)