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446AZ-6RL Digital Micrometer Depth Gage 56289

446, 446M Digital Micrometer Depth Gages
Micrometer Depth Gage, Ratchet Thimble, 0-6" Range, .001"

The Starrett 446, 446M Series Digital Micrometer Depth Gage is a mechanical digital depth micrometer - simple to use even by the inexperienced. One feature is its clear, easily read white numbers on black background that reduces errors. 0-6" Range, .001" Grad, 6 Rods, Ratchet Stop, Lock Nut, Case.

This item is discontinued. Please consider the recommended alternative listed above or contact our special order department at (978) 249-3551 x410 for more information.

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  • Clear, easily read white numbers on black background reduce errors
  • No-glare black finish on the frame
  • Measurement is read directly from the counter
  • Ring-type knurled lock nut for quick and sure locking
  • Combination ratchet and speeder for uniform pressure and quicker adjustment
  • Hardened, ground, and lapped base is 3" (75mm) long
  • Measuring rods are 5/32" (4mm) diameter and are adjustable


  • Made in America: Yes
  • Micrometer Type: Mechanical Digital
  • Range (in): 0-6"
  • Graduations (in): .001"
  • Base Length (in): 3"
  • Lock Nut Type: Ring Type Knurled
  • Measuring Rods (qty): 6
  • Rod Diameter (in): 5/32"
  • Thimble Type: Ratchet
  • Case Type: Padded Case
  • Accuracy (in): Mic head +/-.0001"; Rods +/-.0002"


    Catalog 33 - Section 1 - Micrometers

    In the hands of a skilled operator, the precision micrometer is the most accurate hand-held tool available. When close measurements are necessary, the micrometer is the ideal tool for the job because measurement and reading are on the same axis and the anvil end is supported by a strong frame.

    Precision Hand Tools (Catalog 33)

    612 page catalog featuring precision hand tool, force measurement, vison systems, optical comparators, laser measurement, and flat stock.

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      Member of Kit
      Item #DescriptionPart No.QtyInformation
      2WINDOW, ENGLISH #216PT191071
      3SHELL, ADJUSTING24535-01
      4SPINDLE, SCREW19493-01
      5SHELL, ENGLISH19495-01
      6CAP, SHELL19496-01
      7NUT, .375-52PT164141
      8RING, BINDER19141-01
      9SPRING, .089X.107X.062X.009X213207-01
      10LOCK PIN, DIG MIC19762-01
      11COUNTER ASSEM-ENG.19116-D1
      12SCREW, .052-80 SLOT X .173 LONGPT192902
      13SCREW, .052-80 SLOT X .111 LONGPT191422
      14SCREW, 1/16-64 SLOT X .041 LONG23607-01
      15SPRING, BARREL10058-01
      16WRENCH #3PT015261
      18•CAP ASSEMBLYPT994451
      19•BODY, RATCHET #44619802-01
      20•PIN, RATCHET .066D X .156LPT189761
      21•SPRING, .041X.061X.188X.010X6PT076731
      22•SCREW, #2-64 SLOT X .204 LONGPT197721
      230-1" ROD ASSEMBLYPT9938115-5/16" LONG
      241-2" ROD ASSEMBLYPT9938216-5/16" LONG
      252-3" ROD ASSEMBLYPT9938317-5/16" LONG
      263-4" ROD ASSEMBLYPT9938418-5/16" LONG
      274-5" ROD ASSEMBLYPT9938519-5/16" LONG
      285-6" ROD ASSEMBLYPT99386110-5/16" LNG
      30REPLACEMENT NUT, .125-40PT171211NOT SHOWN

    California Proposition 65 Warning

      WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to: