701A Internal Groove Micrometer 52913

Measures grooves for retaining rings and O rings, oil grooves, washer grooves, as well as bores and recesses. Depth of grooves up to 5/64" can be measured with 701A; and 7/32" with 701B. .500-1.500" Range, .001" Grad, Friction Thimble, Lock Screw.

Contact Starrett


  • Contacts have flush ends
  • Satin chrome reading surface is glare free and resists rust
  • Hardened and ground gaging contacts
  • Smooth friction thimble
  • Lock screw
  • Gaging contacts are .030" thick


  • Micrometer Type: Internal Groove Micrometer
  • Range (in): .500 - 1.500"
  • Graduations (in): .001"
  • Accuracy (in): +/-.0002"


    Member of Kit
    Item #DescriptionPart No.QtyInformation
    20SPINDLE, OUTER JAW19452-01
    30SPINDLE, INSIDE MIC19450-01
    40SHELL, ADJUSTING16991-01
    50SCREW, .157-40 SET X .094 LONGPT063881
    60KEY, LOCATING #70006566-01
    70NUT, .375-52PT164141
    80SPRING, BARREL10058-01
    90CAP, END06567-01
    100SCREW, .100-56 LOCK X .250 LONGPT092611
    110CAP, SHELL FRICTION05048-01
    120SHELL, FRICTION SA26199-01
    130NUT, #4-4819160-02
    140SCREW, .157-40 SLOT X .377 LONGPT051361
    150WRENCH #3PT015261


    2D Dimensional Drawing (PDF)



    74.99 kb
    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.