Mitutoyo Tubular Inside Micrometer Extension Pipe 4-20"

This  inside micrometer includes a micrometer head and four extension pipes that allow for a wide range of ID measurements. A setting ring can be used to accurately set this micrometer. 

• Overall range 4-20"
• Micrometer head range 4-5"
• Extension pipes 1", 2", 4", 8"
• Accuracy +/-{0.00015+0.00005n+0.00005R*/2}" R= Maximum measuring length(inch) Fraction rounded up. N= Number of rods
• Graduation 0.001"
• Measuring error of micrometer head +/-3µm
• Travel of micrometer head 1"
• Case Includes a fitted plastic case

 Mitutoyo Part # 139-178
NOTE: This item is not returnable.