SPI CMS160713033 0.425 to 0.5", Mechanical Inside Hole Micrometer

SPI, CMS160713033, 0.425 to 0.5", 2.11" Gage Depth, Mechanical Inside Hole Micrometer

Features:

• Self-centering contact points for accurate measurement of internal diameters
• Measuring contact points are designed to allow measurements near the bottom of blind holes
• Supplied with the calibrated setting ring on sizes up to 4"
• Additional extensions can be added to increase the measuring depth
• Ratchet stop
• Models up to and including 0.24" have 2 measuring points
• Short form calibration certificate included on sizes up to 4"
• Furnished in fitted case