443Z-9RL Micrometer Depth Gage with Half Base

443 Micrometer Depth Gages with Half Base
Micrometer Depth Gage with Half Base, Ratchet Thimble, 0-9" Range, .001"

The Starrett Micrometer Depth Gage with half base features a combination ratchet and speeder, ring-type locknut, ratchet stop and locknut. 0-9" Range, .001" Grad, 9 Rods, Ratchet Stop, Lock Nut, Case.

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  • The depths of holes, slots, shoulders and projections can be measured with these fine tools
  • 2" (50mm) half base permits measuring depths of holes and slots close to shoulders and between obstructions
  • Combination ratchet and speeder for uniform pressure and quicker adjustment
  • Rods have individual length adjustment and are 5/32" (4mm) in diameter
  • Ring-type knurled lock nut for quick and sure locking


  • Made in America: Yes
  • Micrometer Type: Mechanical
  • Range (in): 0-9"
  • Graduations (in): .001"
  • Base Length (in): 2" - Half Base
  • Lock Nut Type: Ring Type Knurled
  • Measuring Rods (qty): 9
  • Rod Diameter (in): 5/32"
  • Thimble Type: Ratchet
  • Case Type: Padded Case
  • Accuracy (in): Mic head +/-.0001"; Rods +/-.0002"


    2D Dimensional Drawing (PDF)



    35.44 kb



    Catalog 33 - Section 1 - Micrometers
    The L.S. Starrett Company

    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.

    [69 pages]

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      Member of Kit
      Item #DescriptionPart No.QtyInformation
      20LOCK KITPT991761
      30•SPRING, .132X.156X.094X.012X2 -1/209179-01
      40•PIN, .123X.155X15109255-01
      50•RING, BINDER09180-01
      60SHELL, ADJUSTING09183-01
      70NUT, .375-52PT164141
      80SPINDLE SCR. .291-4008027-01
      90SHELL, OUTSIDE16806-01
      100SPRING, BARREL10058-01
      110CAP, SHELLPT080261
      130•NUT,#2-64 RATCHET19801-01
      140•CAP ASSEMBLYPT994451
      170•PIN, RATCHET .066D X .156LPT189761
      180•SPRING, .041X.061X.188X.010X6PT076731
      190•SCREW, #2-64 SLOT X .204 LONGPT197721
      200ROD ASSEMBLYPT9934114-1/8" LNG
      230ROD ASSEMBLYPT9934215-1/8" LNG
      260ROD ASSEMBLYPT9934316-1/8" LNG
      290ROD ASSEMBLYPT9934417-1/8" LNG
      320ROD ASSEMBLYPT9934518-1/8" LNG
      350ROD ASSEMBLYPT9934619-1/8" LNG
      380ROD ASSEMBLYPT99347110-1/8" LNG
      410ROD ASSEMBLYPT99348111-1/8" LNG
      440ROD ASSEMBLYPT99349112-1/8" LNG
      470WRENCH #3PT015261
      500RPLACEMEENT ROD 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: www.P65Warnings.ca.gov