Description

21-914-7 SPI Hole Mike 3.50″ – 4.00″ w/ Cert

SPI Hole Mike 3-Point Internal Micrometer

Specifications Include…

• 3.50″ – 4.00″ Measuring Range
• 0.0002″ Readings
• 3.54″ Measuring Depth
• Setting Ring
• Includes Certificate of Calibration
• Includes Case

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