• Depth Micrometer from Starrett

Depth Micrometer from Starrett

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The Starrett 440, 440M, 445, 445M Series Depth Micrometer features a combination ratchet and speeder, ring-type locknut, ratchet stop and locknut. 0-6” Range, 3” Base, 6 Rods, Ratchet Stop, Lock Nut, Case.

  • The depths of holes, slots, shoulders and projections can be measured with these fine tools
  • 3" (75mm) base and 5/32" (4mm) diameter measuring rods
  • Combination ratchet and speeder for uniform pressure and quicker adjustment
  • Ring-type knurled lock nut for quick and sure locking
  • Satin chrome reading surface is glare free and resists rust


Micrometer Type Mechanical
Range (in) 0-6"
Graduations (in) 0.001"
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"