Mitutoyo 137-205 Tubular Vernier Inside Micrometer, Extension Rod Type, 50-1500mm Range, 0.01mm Graduation, +/-0.043mm Accuracy, 10 pcs Extension Rods

Tubular micrometer measures the inside dimensions of cylinders, rings, and parallel surfaces
Vernier scale in metric units for taking precise inside dimension (ID) measurements
Includes interchangeable extension rods for a diversified range of measurement
Slow head travel helps provide fine positioning
Solid extension rods help provide durability