The Mitutoyo 139-173 Tubular Inside Micrometer head is designed for standalone use or in conjunction with optional interchangeable extension tubes. Satin-chrome finished. Wide range of ID measurements by combining extension pipes and anvils with the micrometer head.
SPECIFICATIONS
Range: 100-500mm
Travel of Micrometer Head: 25mm
Graduation: 0.01mm or 0.001-inch
Extension Pipes: 25mm, 50mm, 100mm, 200mm