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Starrett outside micrometer 4 to 5 inch range ratchet thimble carbide anvils flat finish in case

Starrett

Starrett T444.1XRL-5 Outside Micrometer 4-5" Ratchet

SKU CH-MY99-YNRSQ

Mechanical outside micrometer measures 4 to 5 inches with 0.0001 inch resolution and ratchet thimble

  • Measures 4 to 5 inches with 0.0001 inch resolution
  • Ratchet thimble gives consistent measuring force
  • Carbide anvil and spindle resist wear
  • Includes case and adjustable wrench
  • Mechanical vernier display needs no power

Starrett 4–5 inch Outside Micrometer

The Starrett T444.1XRL-5 is a mechanical outside micrometer covering a 4 in to 5 in measuring range. It features a vernier display with 0.0001 in resolution and a stated accuracy of +/- 0.0001 in. A ratchet thimble provides consistent measuring force while the carbide spindle and anvil resist wear. A fitted case and adjustable wrench are included.

Machinists needing 4–5 inch external measurements

This tool suits machinists and inspectors verifying shaft diameters or part thickness within the 4–5 inch window. The mechanical vernier requires direct line-of-sight reading and manual skill to interpret. Buyers who want digital readout, data output, or a longer range should look at a different instrument.

0.0001 inch resolution vernier scale

The single specification that decides fit is the 0.0001 in vernier resolution paired with +/- 0.0001 in accuracy. If your tolerance stack demands finer discrimination or a digital display, this micrometer will not meet the requirement.

Highlights

  • Measures 4 to 5 inches with 0.0001 inch resolution
  • Ratchet thimble gives consistent measuring force
  • Carbide anvil and spindle resist wear
  • Includes case and adjustable wrench
  • Mechanical vernier display needs no power

Specifications

BrandSTARRETT

Questions about this item

Does the box contain the micrometer, a case and the adjustable wrench, or must I buy the wrench separately?

The case and the adjustable wrench are both included, so no separate purchase is required.

Is there a choice of measuring range or resolution for this model?

The model is supplied only in the 4 in to 5 in range with a 0.0001 in resolution.

What does the 0.0001 in accuracy mean when I am measuring a shaft in the workshop?

It means any reading you take will be within 0.0001 in of the true dimension across the full 4 in to 5 in span.

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