SPI 17-620-6 Electronic 3 Point Internal Micrometer, 0.275 - 0.500"

Includes:

• 3 setting rings
• 4" extension rod
• Spanner wrench in fitted case

Features:

• IP65
• Self centering 3 contact points for accurate measurement of internal diameters.
• Carbide measuring.
• Measurement can be taken close to the bottom of a blind bore, can also be taken in a deep bore with extension rod.
• Supplied with calibrated setting ring and extension rod.
• Ratchet thimble.
• SPC/USB data output.
• Battery: 357/303 included.
• Short Form Certificate of Calibration included.