21-880-0 SPI Hole Mike Set .120" - .280" w/ Cert

SPI Hole Mike Internal Micrometer Set

Specifications Include...

• 0.120" - 0.280" Measuring Range
• 0.0001" Readings
• 0.78" Measuring Depth
• 2 Setting Rings
• Includes Certificate of Calibration

Features include...

• Three point internal micrometer for precise, direct measurement of bore diameters.
• Self aligning and self centering
• Carbide measuring anvils
• Suitable to measure to within .050" of bottom of blind hole, up to 4" capacity
• Feelers taper toward the back for positive reading of the front edge
• Ratchet stop provides uniform measuring pressure
• Includes Case