It's still us but we have a new look on our website! Details
We have updated our website to better serve you

Find what you need faster and understand the precision measurement industry better on We have added to our website 600-800 new products each week, a comprehensive resource center, and an instant request a quote feature.

A global distributor of precision measurement tools
  • Product Code: #S78XTFZ

    78XT Bore Gage Set # S78XTFZ

    Range/Size: 2-4"

    Graduations: .0001"

    Price: $3,921.00

    Product Description

    S78XTFZ Bore Micrometer/Bore Gage: 2.00-4.00"

    The S78XTFZ is made up of the following:

    • 78XTZ-258     2.00-2.625" Starrett Bore Gage
    • 78XTZ-314     2.625-3.25" Starrett Bore Gage
    • 78XTZ-4         3.250-4.00" Starrett Bore Gage

    The 78XT Series Internal Micrometers feature extended travel, reducing the need to exchange anvils. The ground contact points seat the internal micrometer faster and more accurately than the spherical contacts found in other gages. These rugged and accurate internal micrometers are available individually or in economical sets from .040-12" (1-300mm).


    • Wide measurement range without changing anvils
    • Resolution from .0001" (0.0025mm) on the 2-point contact tools ranging up to 1/4" (6mm) and .00025" (0.005mm) on the 3-point contact tools ranging from 1/4"-12" (6mm - 300mm)
    • Tungsten carbide measuring faces on all 3-point heads above 1/2" (12.5mm)
    • Ratchet stop ensures consistent measurements
    • Self-centering contacts for true readings
    • Blind bore measuring capability above 1/2" (12.5mm) diameter
    • Extensions available up to 6" (150mm) for deep hole measuring
    • Setting rings included
    • Depth stop/collar also available for .080"- .250" (1-6mm) range
    • Each micrometer bore gage is furnished in a case, complete with setting ring, contacts, wrenches, and instructions.

    If you have any questions on the S78XTFZ Starrett Bore Gage, please contact our inside sales department either by phone, live chat, or email

Live Chat
Cart Summary