1 - 2" Inside Micrometer Ratchet Stop 0.0001" Graduation Precision Ruler Measure Scale Measuring Range: 1-2" Reading: 0.0001" Graduation: 0.0001" Accuracy: 00024"/.006mm Inside Micrometer Caliper Type for measuring various inside dimensions. Finished with setting rings. Satin Chrome Finish On Barrel And Thimble. Spindle Threads Are Hardened And Ground. Built-In Ratchet Stop Device Ensures Accurate Repetitive Readings. Supplied In Plastic Case. Quantity: 1 Shipping weight: 1Lbs