21-914-7 SPI Hole Mike 3.50" - 4.00"

21-914-7 SPI Hole Mike 3.50" - 4.00"

  • $ 475.00


SPI Hole Mike 3-Point Internal Micrometer

Specifications Include...

  • 3.50" - 4.00" Measuring Range
  • 0.0002" Readings
  • 3.54" Measuring Depth
  • Certified Setting Ring
  • 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