Holtest (Type II) Series 368 – Three-Point Internal Micrometers

Inside Measurement Tools

Showing 13–20 of 20 results

  • Holtest (Type II) Series 368 – Three-Point Internal Micrometers
    Starting at $492.30

    – The Holtests (type II) have three contact points made of alloyed steel.
    – Measurement can be taken closer to the bottom of the blind bore.
    – Can measure deep holes using an Extension Rod (optional).
    – With Ratchet Stop for constant force.
    – Setting Rings for zero point adjustment are optional.
    – Supplied in fitted plastic case up to 100mm / 4”. Over 100mm / 4” supplied in wooden case.

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  • Holtests – Series 368 – Three Point/Two-Point Internal Micrometers
    Starting at $539.10

    These Holtests are versatile, self-centering three-point internal micrometers for the accurate and efficient direct-measurement of internal diameters. Three anvils, evenly spaced at 120° apart, contact the internal wall surfaces and find true alignment with the axis of the bore for accurate ID measurement.
    TiN-coated measuring contact points(over 6mm/.275″ range models) provide excellent durability and impact resistance and allow the instrument to measure right to the bottom of a blind hole.
    Highly durable because of carbide-tipped contact points (anvils).
    Measurement can be taken closer to the bottom of the blind bore.
    Can measure deep holes using an Extension rod (optional) which is available on models over 6mm (.275″) measuring range.
    With Ratchet Stop for constant force.
    Setting Rings for zero point adjustment are optional.
    Supplied in fitted plastic case up to 100mm / 4”. Over 100mm / 4” supplied in wooden case.

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  • Inside Micro Checker – Series 515
    Starting at $2,205.00

    The Inside Micro Checker is designed to efficiently check the zero point of a tubular inside micrometer.
    Each measuring block is made of zirconia-based ceramic and it is free from deterioration and dimensional changes over time.

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  • Inside Micrometers Series 141 – Interchangeable Type
    Starting at $70.88

    Wide range of ID measurements with interchangeable rods.
    Each interchangeable rod is marked with its measuring range.
    The sizes of interchangeable rods can be adjusted with spacing collars.
    Both micrometer head and furnished rods are satin-chrome finished throughout.

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  • Inside Micrometers Series 345, 145 – Caliper Type
    Starting at $225.90

    – Caliper type jaws are made of high-grade, tool steel.
    – Locking clamp for positive locking of spindle.
    – Satin-chrome finished.
    – A special holder is available to be used with Mitutoyo Micrometer Stand.

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  • Setting Ring – Series 177 – Accessories for Inside Micrometers, Holtest, and Dial Bore Gauges
    Starting at $109.80

    • Used for quick and accurate setting of dial bore gauges, Holtest and inside micrometers.
    • If a setting ring of an optimal size is prepared, it can be used for calibration.

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  • Tubular Inside Micrometers Series 133 – Single Rod Type
    Starting at $168.30

    With locking clamp.
    Zero point can be readjusted by twisting the micrometer head sleeve. A key wrench is supplied.
    Clear, crisp graduations on the satin chrome finished micrometer head.
    Carbide-tipped measuring faces.
    Supplied in fitted plastic case.Over 200mm/8in supplied in wooden case.

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  • Tubular Inside Micrometers Series 137 – Extension Rod Type, Series 139 – Extension Pipe type, Series 140 – Extension Pipe Type
    Starting at $124.20
    • Wide range of ID measurements by combining extension rods (pipes) and anvils with the micrometer head.
    • Carbide-tipped measuring faces are available. (series 137)
    • The 139 and 140 series use highly-durable/ large-diameter extension pipes.
    • Series 137 supplied in fitted plastic case except 1550mm/60in come in wooden case.
    • Series 139 supplied in fitted wooden case except 500mm/20in come in plastic case.
    • Series 140 supplied in fitted wooden case.
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