SPI 10-761-5 11.000 - 12.000" 3-Point Hole-Mike Set

SPI, 10-761-5, 11.000 - 12.000" 3-Point Hole-Mike Set

Features

• 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 and assures highest reading accuracy.
• In lieu of Setting Rings, Setting Frames are provided for diameter ranges above 7" dia.